Attachment_4_B_Air_Force_Category_Codes_.pdf

Real Property Category Codes

AFCEC/CIT

U.S Air Force

This document contains an approved listing of U.S. Air Force Category Codes for use within the AF Real Property Inventory (RPI). These category codes have been vetted through Office of Secretary of Defense Real Property Classification Panel through the Real Property Categorization System (RPCS). Some category codes are newly approved while others, although listed in this book, may be recommended for deletion in the next fiscal year. This is a living document that will be updated when a new FY RPCS is published. Previous versions of the AF Category Code book are superseded.

1406918170A Typewritten Text

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1406918170A Typewritten Text Attachment 4 B

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RUNWAY – 111111

SHORT TITLE: RUNWAY

RPA TYPE CODE: LS

UM1: SY

UM2: LF

FAC: 1111

FAC TITLE: Fixed-Wing Runway, Surfaced

FUM: SY

Paved surface provided for normal aircraft takeoffs and landings. This category includes crosswind, parallel, primary, instrument and instrument type runways. The runway is the paved surface provided for normal aircraft landings and takeoffs. For shortfield operations, a special paved strip is provided, category code 116-116. For normal helicopter operations, a square pad is provided, category code 116-663. In addition to the actual paving of the runway, category code 116-663 includes grading and drainage of the runway, runway shoulders, lateral safety zones, and clear zone (See AFJMAN 32-1013). (per AFH 32-1084)

Runways, Taxiways and Ramps: A RUNWAY is differentiated from other surfaces on the airfield by being the only surface an aircraft (other than a helicopter) either lands on or takes off from. Runways may also be used for taxiing aircraft and in some cases for parking aircraft. Runways are always designated (and normally marked) by a one or two number label, loosely associated with their compass bearing. In other words, a runway oriented north-south might be designated 36/18, but might also be identified as 35/17 or 01/19. Runway markings are always white. Runways are also bordered by white lights.

RUNWAY

ARMY CODE = 11110

NAVY CODE = 11110/11125

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OVERRUN, PAVED – 111115

SHORT TITLE: OVERRUN, PAVED

RPA TYPE CODE: LS

UM1: SY

UM2: LF

FAC: 1113

FAC TITLE: Runway Overrun Area, Surfaced

FUM: SY

An extension of the runway pavement excluding shoulders. Cost includes asphalt surface, base, sub-base, and striping (excluding shoulders). An overrun is an extension of the length of the runway pavement.

The runway overrun is the portion of the overrun area that is an extension of the runway pavement (excluding shoulders). Because of the possibility of short landings and approach end engagement of aircraft arresting barriers, runway overruns are paved to the following standards: Length: 300 m (1,000 ft) on each end of heavy, modified heavy, medium-light load and auxiliary runways, and 90 m (300 ft) on each end of a shortfield runway and ACR (Alternate Combat Runway). (AFH 32-1084)

Blast pads, also known as overrun areas or stopways, are often constructed just before the start of a runway where jet blast produced by large planes during the takeoff roll could otherwise erode the ground and eventually damage the runway. Overrun areas are also constructed at the end of runways as emergency space to slowly stop planes that overrun the runway on a landing gone wrong, or to slowly stop a plane on a rejected takeoff or a takeoff gone wrong. Blast pads are often not as strong as the main paved surface of the runway and are marked with yellow chevrons. Planes are not allowed to taxi, take off or land on blast pads, except in an emergency.

Runway overruns keep the probability of serious damage to an aircraft to a minimum in the event that the aircraft runs off the runway end during a takeoff or landing, or lands short during a landing. Overruns are required for the landing and takeoff area. Table 3-4 shows the dimensional requirements for overruns. Overrun profiles are shown in Figure 3-3, and an overrun layout is shown in figures 3-7, 3-10, 3-13, and 3-16. USAF and Army design and construction requirements are covered in UFC 3-260-02 (Chapter 10, under "Special Areas"). Additionally, for all services, manholes, hand holes, and drainage structures constructed within this area should, at a minimum, be designed as provided in this section of the manual. (NOTE: These requirements do not apply to projects already under design prior to the publication date of this manual.) The top surface of foundations should be flush with the grade. Sub-grade structures are not designed to support aircraft wheel loads beyond the paved and unpaved areas of the overrun. Maintenance action is required if the drop-off at the top edge of the foundation exceeds 76 mm (3 in).

Shoulder Width. The total width of the shoulder (paved and unpaved) is normally 61 m (200 ft) each side of the runway and along the entire length of paved overruns. Exceptions are shortfield, ACR, “Class A runways”, and helicopter strips, which have shoulder widths of 6.1 m (20 ft), 1.2 m (4 ft), 15.2 m (50 ft), and 7.6 m (25 ft), respectively. (AFH 32-1084)

ARMY CODE = 11151

NAVY CODE =

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RUNWAY, UNPAVED – 111411

SHORT TITLE: RUNWAY, UNPAVED

RPA TYPE CODE: LS

UM1: SY

UM2: LF

FAC: 1114

FAC TITLE: Runway, Unsurfaced

FUM: SY

The unpaved surface provided for air and space vehicle landing. This category code includes crosswind parallel, primary instrument, and instrument type unpaved runways. (Can be grass or dirt)

ARMY CODE = 11111/11121

NAVY CODE = 11112

TAXIWAY – 112211

SHORT TITLE: TAXIWAY

RPA TYPE CODE: LS

UM1: SY

UM2: LF

FAC: 1121

FAC TITLE: Taxiway, Surfaced

FUM: SY

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Pavement provided for ground movement of aircraft. They connect the parking and maintenance areas of the airfield with the runways and provide access to the hangars, docks, and various parking areas and pads.

Taxiways are the pavements provided for the ground movement of aircraft. Taxiways connect the parking and maintenance areas of the airfield with the runways and provide access to hangars, docks, and various parking aprons and pads. Taxiways are normally parallel to runways to facilitate aircraft ground movement on the taxiways during landings and takeoffs on the runway.

Taxiway markings are always yellow. Most have yellow centerline markings to facilitate remaining in the center of, and following the taxiway in reduced visibility. They may also be bordered by blue lights and may have blue lights embedded in the centerline.

Taxiway Width. A taxiway width of 15.2 m (50 ft) and 22.9 m (75 ft) are standard for class A and B runways, respectively, with the following exceptions: Shortfield - 15.2 m (50 ft) with a turning radii of 21.3m (70 ft); ACR -

10.7 m (35 ft); C-17 - 15.2 m (50 ft); Helicopter - 15.2 m (50 ft).

TAXIWAY

Taxiway at Elmendorf AFB AK Taxiway at Buckley AFB CO

ARMY CODE = 11212

NAVY CODE = 11210

APRON – 113321

SHORT TITLE: APRON

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1131

FAC TITLE: Aircraft Apron, Surfaced

Pavement provided for aircraft parking, servicing, and loading.

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The apron is the area of airfield where aircraft are parked, unloaded or loaded, refueled, or boarded. Although the use of the apron is covered by regulations, such as lighting on vehicles, it is typically more accessible to users than the runway or taxiway.

There are no standard apron sizes. Aprons are individually designed to support specific aircraft and missions at specific installations. The detailed dimensions are determined by the size, type, and number of aircraft requiring parking and maneuvering space; the type of activity the apron serves; the physical characteristics of the project site;

and the objectives of the installation master plan. (AFH 32-1084).

ARMY CODE = 11310/11320/11330/11340/11350/11380

NAVY CODE = 11320/11340

SHORT FIELD TAKEOFF AND LANDING – 116116

SHORT TITLE: SHFLD TO & LDG ZON

RPA TYPE CODE: LS

UM1: SY

UM2: LF

FAC: 1111

FAC TITLE: Fixed-Wing Runway, Surfaced

FUM: SY

This facility is used to train crews of cargo aircraft in the conduct of airlift operations.

The facility is used to train crews of cargo aircraft (C-130 or C-17) to conduct airlift operations in the type of airfield environment found at forward operating locations. The facility is normally a paved strip, 1,070 m (3,500 ft) long and 27.4 m (90 ft) wide, with 91 m (300 ft) paved overruns on each end and 15.2 m (50 ft) wide access taxiways. Other restrictions in physical dimensions and clearances help create the desired airfield environment. The pavements are designed for shortfield load in accordance with criteria in paragraphs 2.2 and 2.3.

Lighting is provided as described under Special Airfield Lighting, category code 136-666, and Taxiway Lighting, category code 136-667. (AFH 32-1084)

APRON

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ARMY CODE = 11110

NAVY CODE = 11110 /11125

PRECISION APPROACH RADAR – 116401

SHORT TITLE: PAR

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1164

FAC TITLE: Miscellaneous Airfield Pavement, Surfaced

FUM: SY

The Precision Approach Radar (PAR) pad is a paved hardstand provided to support the PAR equipment in operating position. The hardstand must be a minimum of 146 square meters (12.1 meters by 12.1 meters) (178 SY (40 feet by 40 feet)). At installations where PAR approaches are provided to more than one runway by a single PAR unit, a turntable is provided to allow PAR service to more than one runway.

Precision approach radar (PAR) is a type of radar guidance system designed to provide lateral and vertical guidance to an aircraft pilot for landing, until the landing threshold is reached. After the aircraft reaches the decision height (DH) or decision altitude (DA), guidance is advisory only. Controllers monitoring the PAR displays observe each aircraft's position and issue instructions to the pilot that keep the aircraft on course and glide-path during final approach. It is similar to an instrument landing system (ILS) but requires control instructions. One type of instrument approach that can make use of PAR is the ground-controlled approach (GCA). Air traffic controllers

AFCatcodes 2016 v1.0 Page 7 must transmit a minimum of every 5 seconds to the pilot their relation to the azimuth portion and, once intercepting the glide-path, their elevation. The approach is terminated when the aircraft reaches the OCA/H (Obstacle Clearance Altitude/Height). Nevertheless, information is provided till threshold and aircraft may be monitored by controller till touchdown. Controller in charge of PAR should not be responsible for any duty other than the PAR approach concerned.

The upper portion of the display indicates elevation, the lower portion azimuth. Controllers must be able to interpret radar returns for the azimuth as a "top view" to inform them if the aircraft is left or right of course.

Precision approach radars are most frequently used at military air traffic control facilities. Many of these facilities use the AN/FPN-63, AN/MPN, or AN/TPN-22. These radars can provide precision guidance to a distance of 10 to 20 miles. The OJ-333 Radar scope is the indicator which the air traffic controller uses to provide instructions to the pilots

AN/GPN-22 Precision Approach Radar, Keesler AFB, MS

ARMY CODE = N/A

NAVY CODE = 11640

FIRE & RESCUE VEHICLE ALERT PAD – 116402

SHORT TITLE: FIRE & RESCUE VEHICLE ALERT PAD

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1164

FAC TITLE: Miscellaneous Airfield Pavement, Surfaced

FUM: SY

This facility provides parking area for Immediate Response Alert Vehicle. The purpose of the Immediate Response Alert is to: 1. Observe all landings and take-offs. 2. Respond immediately to any aircraft accident. 3. Provide timely rescue of personnel involved in emergencies. The pad should be large enough to park one 3,780 liter (1,000 gallon) aircraft rescue and fire fighting vehicle (P-19) and should be located no closer than 45.7 meters (150 feet) from the runway edge. The pad should not include a protective shelter or any other structure, which would violate airfield safety clearance criteria.

NAVY CODE = 11660

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SHOULDER, PAVED – 116642

SHORT TITLE: SHLDR, PAVED

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1165

FAC TITLE: Aircraft Pavement Shoulder

FUM: SY

The shoulders of runways, taxi-ways, etc.

Taxi Shoulder Markings. Taxiways, holding bays, and aprons are sometimes provided with paved shoulders to prevent blast and water erosion. Shoulders are not intended for use by aircraft, and may be unable to carry the aircraft load. Taxiway shoulder markings are yellow lines perpendicular to taxiway edge, from taxiway edge to pavement edge, about 3 meters.

The shoulders of runways, aprons, taxiways, and airfield pads are paved when it is necessary to protect the shoulder areas against jet blast, reduce maintenance of the unpaved shoulder area, support aircraft outrigger gear, or accommodate snow removal equipment, aircraft service vehicles and emergency vehicles. When shoulders are without vegetation and unprotected, continual exposure to jet blast will release soil, stones, and other debris (known as FOD) that can be ingested by jet engines and cause engine damage. (AFH 32-1084)

FOD = Foreign Object Damage

Shoulders in light gray

NAVY CODE = 11612

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ARMING AND DISARMING PADS – 116661

SHORT TITLE: PAD, ARM & DISARM

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1131

FAC TITLE: Aircraft Apron, Surfaced

FUM: SY

Used for arming aircraft immediately before takeoff and for disarming weapons retained or not expended upon their return. The arm/disarm pad is used for arming aircraft immediately before takeoff and for disarming weapons retained or not expended upon their return.

Arming and Disarming Pad

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Also known as a “hammer head”

NAVY CODE = 11635

PAD, DANGEROUS CARGO, LOAD/UNLOAD – 116662

SHORT TITLE: PAD, DANGRS CARGO

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1131

FAC TITLE: Aircraft Apron, Surfaced

FUM: SY

Required where there is a frequent need to load explosives or other dangerous materials on cargo aircraft and where existing aprons cannot be used without violating quantity distance (QD) criteria.

Hazardous cargo pads are paved areas for loading and unloading explosives and other hazardous cargo from aircraft.

Hazardous cargo pads are required at facilities where the existing aprons cannot be used for loading and unloading hazardous cargo.

NAVY CODE = 11655

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HELICOPTER PAD – 116663 (HELIPAD)

SHORT TITLE: PAD, HELICOPTER

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1112

FAC TITLE: Rotary-Wing Landing Area, Surfaced

FUM: SY

Pavement provided for helicopters when there is no other operational apron or pad available in the area.

The pad is a landing area or platform for helicopters. While helicopters are able to operate on a variety of relatively flat surfaces, a fabricated helipad provides a clearly marked hard surface away from obstacles where a helicopter can land safely. Also known as a helipad.

ARMY CODE = 11120/11130

NAVY CODE = 11115/11120

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POWER CHECK – 116664

SHORT TITLE: PAD, POWER CHK

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1131

FAC TITLE: Aircraft Apron, Surfaced

FUM: SY

A paved area, 80 by 120 feet used in performing full power checks of jet engines. A Power Check Pad is an outdoor testing facility designed for in-frame or out-of-frame testing of jet engines. They generally use a thickened concrete slab with tie-down fittings and a blast diverter/deflector.

NAVY CODE = N/A

POWER CHECK W/SUPPRESSOR – 116665 (HUSH HOUSE)

SHORT TITLE: PAD, PWR CHK W/SPR

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1131

FAC TITLE: Aircraft Apron, Surfaced

FUM: SY

The Power Check Pad with suppresser is the prime facility on which operational checks of jet engines are performed. Unsuppressed pads are used as back-up or interim facilities. The suppressor and associated devices are

AFCatcodes 2016 v1.0 Page 13 supplied as items of Government Furnished Equipment (GFE). (The metal building is EQUIPMENT; the pad is the concrete that the building protects.)

Hush House, Buckley AFB, CO Hush House, Barksdale AFB, LA

Interior of Hush House with exhaust port. Rear, exterior showing the exhaust tube.

PAD, WARMUP, HOLDING – 116666

SHORT TITLE: PAD, WRMUP HLDG

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1131

FAC TITLE: Aircraft Apron, Surfaced

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A paved area adjacent to the taxi-way at the end of the runway. It provides a means of bypassing aircraft being held at the runway end for various reasons.

NAVY CODE = 11655

PAD, CALIBRATION – 116667

SHORT TITLE: PAD, CALIBRATION

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1161

FAC TITLE: Compass Calibration Pad, Surfaced

FUM: SY

A paved area where aircraft are positioned for the calibration of the magnetic standby compass and the magnetic azimuth detector.

ARMY CODE = 11610

NAVY CODE = 11620

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PAD, LAUNCHING – 116668

SHORT TITLE: PAD, LCH

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1162

FAC TITLE: Missile Launching Pad, Surfaced

FUM: SY

Those pads that are used for launching rockets. A paved surface designed for the erection and launching of a guided missile. The surface is usually concrete. (Gantry – use catcode 890-154)

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AIRCRAFT WASHRACK – 116672

SHORT TITLE: PAD, ACFT WASH RK

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 1163

FAC TITLE: Aircraft Washing Pad, Surfaced

FUM: SY

An open wash rack with utility systems providing hot and cold water, electric power, compressed air, and cleaning solvents. This facility is usually supported by an adjacent small storage building containing cleaning supplies and tools. (Use Cat Code 211-159 for covered wash rack.)

ARMY CODE = 11370

NAVY CODE = 11610

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AIRCRAFT ARRESTING SYSTEM SUPPORT – 116922 (BARRIERS)

SHORT TITLE: ACFT AREST SYS

RPA TYPE CODE: S

UM1: EA

UM2:

FAC: 1461

FAC TITLE: Aircraft Arresting System

FUM: EA

These systems consist of engaging devices and energy absorbers, engaging devices are the barrier net, the dis-supported cable or the remotely raised cable, energy absorbing devices are anchor chains, rotary friction brakes or rotary hydraulic unit.

Carrier Aircraft Arresting System Airfield Arresting System

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Barrier Equipment Barrier House (PICK UP AS 219947 - BE STORAGE SHED)

ARMY CODE = 14920

NAVY CODE = 14930

FIRING IN BUTT – 116933

SHORT TITLE: BUTT, FIRING-IN

RPA TYPE CODE: S

UM1: EA

UM2:

FAC: 1463

FAC TITLE: Aircraft Firing-In Butt

FUM: EA

Backstops made of earth and wood used as safety areas perpendicular to where aircraft are parked and where hot ammo is downloaded.

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JET BLAST DEFLECTOR – 116945

SHORT TITLE: DEFLECTOR, BLAST

RPA TYPE CODE: S

UM1: EA

UM2:

FAC: 1464

FAC TITLE: Aircraft Blast Deflector

FUM: EA

Concave corrugated metal surface, with or without baffles, fastened and braced to a concrete base to withstand the force of the jet blast which is deflected upward.

A jet blast deflector (JBD) or blast fence is a safety device that redirects the high energy exhaust from a jet engine to prevent damage and injury. The structure must be strong enough to withstand heat and high speed air streams as well as dust and debris carried by the turbulent air. Without a deflector, jet blast can be dangerous to people, equipment and other aircraft.

Barksdale AFB, LA

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ARMY CODE = 14935

NAVY CODE = 14950

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PETROLEUM OPERATIONS BUILDING – 121111

SHORT TITLE: PETROL OPS BLDG

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1444

FAC TITLE: Miscellaneous Operations Support Building

FUM: SF

This is a centralized facility for the management and control of all base functions related to the handling of petroleum products, includes space for a laboratory, ready room for fueling operators, administrative offices, dispatch room, classroom, etc.

ARMY CODE = 14165

NAVY CODE = 12315

AVIATION FUEL DISPENSING – 121115

SHORT TITLE: AVFUEL DISPEN

RPA TYPE CODE: S

UM1: OL

UM2: GM

FAC: 1211

FAC TITLE: Aircraft Fueling Facility

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FUM: OL

"Hoseless" pantograph fuel dispensing arms installed as an integral part of type 3, 4, and 5 aircraft fueling system.

Refueling of tank trucks with bottom loading connection. "Bottom Loader" is designed for bottom loading of all refueling trucks without using hoses. If the truck load stand includes a piping system with a filter separator for delivery of aviation fuel (JP8) to aircraft refuel vehicles, the categorization is Aviation Fuel Dispensing OL = Outlets

ARMY CODE = 12110/12120

NAVY CODE = 12110/12120

HYDRANT FUELING SYSTEM – 121122

SHORT TITLE: HYDR FL, SYS

RPA TYPE CODE: S

UM1: OL

UM2: GM

FAC: 1211

FAC TITLE: Aircraft Fueling Facility

FUM: OL

A facility for the direct fueling of aircraft or for the filling of aircraft fuel tanker trucks. These facilities do not include associated fuel storage that is captured under Facility Analysis Category 1241. Provides all necessary equipment and controls to deliver clean, dry fuel to fueling points in the aircraft parking apron. It includes operational storage tanks when required but not bulk storage. OL = Outlet

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Hydrant Fueling System Type I/II Hydrant Fueling System (Type III)

Hydrant Fueling System (Type IV) MINOT AFB, ND SYSTEM

HYDRANT FUELING BUILDING – 121124

SHORT TITLE: HYDR FL, BLDG

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1444

FAC TITLE: Miscellaneous Operations Support Building

FUM: SF

A building containing equipment and functions that directly support operational activities not included in other Facility Analysis Categories. .Pump-houses or pump shelters for fuel transfer pumps and associated equipment.

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Fuel Pump House, Buckley AFB CO

NAVY CODE = 12520

MARINE FUEL DISPENSING SYSTEM – 122111

SHORT TITLE: MAR FL DISPEN SYS

RPA TYPE CODE: S

UM1: OL

UM2: GM

FAC: 1221

FAC TITLE: Marine Fueling Facility

FUM: OL

A facility for the direct fueling of ships. These facilities do not include associated fuel storage that is captured under Facility Analysis Category 1241. Fuel received by barge or tanker requires an unloading pier with mooring facilities, hose connections derricks for handling hose, hose storage racks, pipelines, and fire protection equipment (under certain conditions a submerged sea unloading line is provided). OL = Outlet

ARMY CODE = 12210

NAVY CODE = 12210/12220/42320

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VEHICLE FUELING STATION – 123335

SHORT TITLE: VEH FL STN

RPA TYPE CODE: S

UM1: OL

UM2: GM

FAC: 1231

FAC TITLE: Vehicle Fueling Facility

FUM: OL

A facility for the direct fueling of land vehicles or for the filling of fuel tanker trucks. These facilities do not include associated fuel storage that is captured under Facility Analysis Category 1241. Commercial type fueling or which service Government Owned motor vehicles. One dispensing unit is provided for each type of fuel. The BCE is allowed separate stations when located over 1 mile from the motor pool.

OL = Outlets (Fuel Pumps)

Buckley AFB CO 45 SW, Charles Justice

45 SW, Charles Justice

ARMY CODE = 12310/12311/12312/12313/12314/12322/12333

NAVY CODE = 12310

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OPERATING STORAGE, AVIATION GAS – 124131

SHORT TITLE: OPG STOR, AVGAS

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1241

FAC TITLE: Aircraft Operating Fuel Storage

FUM: GA

Storage tanks that provide an operating and reserve supply of aviation fuel. Operating fuel tanks are typically in the range of 5,000 gallons to 420,000 gallons (420,000 gallons is equal to 10,000 barrels). FAC includes the containment structures in support of the storage tanks such as containment berms, liners, and monitoring wells.

Operating tanks are normally provided for pressurized hydrant fueling systems and are required whenever the distance from the fueling apron to the bulk storage area exceeds one mile. Tanks may be required at certain overseas installations where the separation distance is less than a mile; specifically, where there are special fueling facilities, such as pressure type hot refueling or in-shelter refueling systems, and the provision of operating tanks can be justified by the responsible command HQ on the basis of survivability. In these cases, bulk storage tanks are sometimes converted to operating tanks providing back-up capability for pressure type fueling systems. Fuel is transferred by pipeline from the bulk storage tanks to the operating tanks. The operating tanks will be vertical aboveground tanks, wherever possible. Two tanks are required for each hydrant fueling system. Operational tank size shall be based on the mission support requirements as determined by the MAJCOM Fuels Facility Engineer and

MAJCOM/LGSF.

For active force bases, 10,000 barrel operating storage tanks for hydrant systems should be the minimum size with up to 55,000 barrels authorized depending on total base war time stockage objectives. Siting adjacency consideration should be given to proximity to pressurized hydrant fueling system pump houses. These facilities should also be located as close as possible to the aircraft parking apron to minimize hydraulic surge and system cost.

ARMY CODE = 12410/12411/12412/12413

NAVY CODE = 12150/12230/12330/12430

OPERATING STORAGE, AVIATION LUBRICANT – 124132

SHORT TITLE: OPG STOR, AVLUBE

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1241

FAC TITLE: Aircraft Operating Fuel Storage

FUM: GA

Storage tanks that provide an operating and reserve supply of aviation lubricant.

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OPERATING STORAGE, DIESEL – 124134

SHORT TITLE: OPG STOR, DIESEL

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1243

FAC TITLE: Vehicle Operating Fuel Storage

FUM: GA

Storage tanks that provide an operating and reserve supply of diesel fuel. Operating fuel tanks are typically in the range of 5,000 gallons to 420,000 gallons (420,000 gallons is equal to 10,000 barrels).

Charles Justice, 45 SW

(Underground Storage tanks)

ARMY CODE = 12450/12452/12453/12454/12455/12480/12481

NAVY CODE = 12350

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OPERATING STORAGE, JET FUEL – 124135

SHORT TITLE: OPG STOR, JET FL

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1241

FAC TITLE: Aircraft Operating Fuel Storage

FUM: GA

Storage tanks that provide an operating and reserve supply of jet fuel. Operating fuel tanks are typically in the range of 5,000 gallons to 420,000 gallons (420,000 gallons is equal to 10,000 barrels).

Tanks are enclosed with spill containment dikes

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Underground Storage Tanks (UST)

ARMY CODE =

OPERATING STORAGE, MOTOR GAS – 124137

SHORT TITLE: OPG STOR, MOGAS

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1243

FAC TITLE: Vehicle Operating Fuel Storage

FUM: GA

Storage tanks that provide an operating and reserve supply of motor gas. Operating fuel tanks are typically in the range of 5,000 gallons to 420,000 gallons (420,000 gallons is equal to 10,000 barrels).

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Underground Storage Tanks (UST)

OPERATING STORAGE, SOLVENTS – 124138

SHORT TITLE: OPG STOR, SOLVENTS

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1244

FAC TITLE: Other Operating Fuel Storage

FUM: GA

Storage tanks that provide an operating and reserve supply of solvents.

OPERATING STORAGE, SPECIAL FUELS – 124139

SHORT TITLE: OPG STOR, SP FL

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1244

FAC TITLE: Other Operating Fuel Storage

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Storage tanks that provide an operating and reserve supply of fuel for facilities and equipment not in the aircraft, marine, or vehicle categories. Includes heating fuel, lubricants and miscellaneous POLs. Operating fuel tanks are typically in the range of 5,000 gallons to 420,000 gallons (420,000 gallons is equal to 10,000 barrels).

ARMY CODE = 12470/12471/12472/12473/12482/12483

NAVY CODE = 12465/12530/12615/82160/82161

OPERATING STORAGE E‐85 ETHANOL – 124340

SHORT TITLE: OPG STOR, E-85 ETHANOL

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1243

FAC TITLE: Vehicle Operating Fuel Storage

FUM: GA

Storage tanks that provide an operating and reserve supply of fuel for vehicles. Operating fuel tanks are typically in the range of 5,000 gallons to 420,000 gallons (420,000 gallons is equal to 10,000 barrels). Storage tanks that provide an operating and reserve supply of E-85 Ethanol.

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OPERATING STORAGE BIO‐DIESEL – 124341

SHORT TITLE: OPG STOR, BIO-DISEL

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1243

FAC TITLE: Vehicle Operating Fuel Storage

FUM: GA

Storage tanks that provide an operating and reserve supply of Bio-Diesel fuel for vehicles. Operating fuel tanks are typically in the range of 5,000 gallons to 420,000 gallons (420,000 gallons is equal to 10,000 barrels.

OPERATING STORAGE DIESEL JP‐8 – 124342

SHORT TITLE: OPG STOR, DIESEL JP-8

RPA TYPE CODE: S

UM1: GA

UM2:

FAC: 1243

FAC TITLE: Vehicle Operating Fuel Storage

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Storage tanks that provide an operating and reserve supply of fuel for vehicles. Operating fuel tanks are typically in the range of 5,000 gallons to 420,000 gallons (420,000 gallons is equal to 10,000 barrels).

POL PIPING SYSTEM, WITHIN A SITE – 125210

SHORT TITLE: POL PIPING SYSTEM, WITHIN A SITE

RPA TYPE CODE: LS

UM1: LF

UM2:

FAC: 1252

FAC TITLE: POL Piping

FUM: LF

Piping from operating fuel tanks to airfield fueling systems, and piping along piers used for marine fueling. See FAC 1251 for pipelines between bulk and operating fuels storage.

PIPELINE, LIQUID FUELS – 125554

SHORT TITLE: PIPELINE LF

RPA TYPE CODE: LS

UM1: LF

UM2:

FAC: 1251

FAC TITLE: POL Pipeline

FUM: LF

Pipelines for the transfer of petroleum products to, from, and between operating, offload, and bulk storage areas.

** For Piping from operating fuel tanks to airfield fueling systems (FAC 1211), and piping along piers for marine fueling (FAC 1221) use FAC 1252, CATCODE 125120.

*** FAC 1251 is used for pipelines between bulk and operating fuels storage.

Fuel pipelines are provided for each different grade of fuel, except for cross country pipelines and offshore unloading lines.

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ARMY CODE = 12510/12520

NAVY CODE = 12510

PUMP STATION, LIQUID FUEL – 125977

SHORT TITLE: PMP STN, LF

RPA TYPE CODE: S

UM1: GM

UM2:

FAC: 1262

FAC TITLE: POL Pump Station

FUM: GM

A facility that consists of POL pumps and related pumping equipment. This does not include the building housing the pumping equipment, which is carried under FAC 1444 (Miscellaneous Operations Support Building). Pumping systems that issue and transfer fuel in and out of storage tanks.

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NAVY CODE = 12520

LIQUID FUEL TRUCK FILL STAND – 126925

SHORT TITLE: LF FIL STD, TRK

RPA TYPE CODE: S

UM1: OL

UM2: GM

FAC: 1261

FAC TITLE: Liquid Fuel Loading/Unloading Facility

FUM: OL

A facility that supports loading and/or unloading of operating and reserve supply of fuels and other petroleum, oil, and lubricant products to other than the end user. Includes loading/unloading of tank trucks, tank cars, and barges.

These facilities include paved containment area, piping, hoses, lighting, fuel recovery sump pits, and pumps if the pumps are not located in a separate building (such as FAC 1262 POL Pump Station).

Truck fill stands are provided where bulk petroleum products are stored and dispensed. They are required as a means of unloading fuel from fueling vehicles into fuel storage tanks. OL = Outlets

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NAVY CODE = 12620/12630

LIQUID FUEL STAND, UNLOADING – 126926

SHORT TITLE: LF STD UNLOAD

RPA TYPE CODE: S

UM1: OL

UM2: GM

FAC: 1261

FAC TITLE: Liquid Fuel Loading/Unloading Facility

FUM: OL

A facility that supports loading and/or unloading of operating and reserve supply of fuels and other petroleum, oil, and lubricant products to other than the end user. Includes loading/unloading of tank trucks, tank cars, and barges.

These facilities include paved containment area, piping, hoses, lighting, fuel recovery sump pits, and pumps if the pumps are not located in a separate building (such as FAC 1262 POL Pump Station).

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Truck unloading stands/headers are provided where bulk petroleum products are stored and dispensed. The fuel loading facilities are required as a means of unloading fuel from fueling vehicles into fuel storage tanks.

OL = Outlet

ARMY CODE = 12630/12640/12650/12660/12670

NAVY CODE = 12640

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FIRE CRASH/RESCUE STATION – 130142

SHORT TITLE: FR CRASH/RESC STN

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1411

FAC TITLE: Airfield Fire And Rescue Station

FUM: SF

Fire And Rescue Station - Provides emergency crash/rescue operations on the airfield. The facility is located on the flight-line for quick response to aircraft emergencies. Space is provided for truck bays, radio dispatch area;

maintenance and apparatus, which includes fire protection vehicle storage, maintenance, repair and supply support;

administration and training; and the general residential and "living" areas. SF = SQ FT/ST = Stalls

Davis-Monthan AFB AZ

ARMY CODE = 14111

NAVY CODE = 14120/14125

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TELECOMMUNICATIONS FACILITY – 131111

SHORT TITLE: COMM FCLTY

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

FUM: SF

Typically a one story centrally located facility set up for intra-base and inter-base communications. Space is included for base telephone exchange, autodin function, administrative offices, and maintenance functions.

(Autodin = Automatic Digital Network or ADNS)

ARMY CODE = 13120

NAVY CODE = 13115/13117

MILITARY AFFILIATE RADIO SYSTEM – 131114 (MARS)

SHORT TITLE: RAD, MARS

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

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FUM: SF

The MARS station is an official, integral part of the telecommunications complex. Missions, functions, and operating methods are outlined in regulatory publications.

The Military Auxiliary Radio System (MARS) is a United States Department of Defense sponsored program, established as a separately managed and operated program by the United States Army, Navy, and Air Force. The program is a civilian auxiliary consisting primarily of licensed amateur radio operators who are interested in assisting the military with communications on a local, national, and international basis as an adjunct to normal communications. The MARS programs also include active duty, reserve, and National Guard units; Navy, Marine Corps, and National Oceanic and Atmospheric Administration ships, and Coast Guard cutters and shore stations.

MARS has a long history of providing worldwide auxiliary emergency communications during times of need. The combined three-service MARS programs (Army, Air Force, and Navy–Marine Corps) volunteer force of over 5,000 dedicated and skilled amateur radio operators provide the backbone of the MARS program. The main benefit of MARS membership is enjoying the amateur radio hobby through an ever-expanding horizon of MARS service to the nation. MARS members work by the slogan "Proudly serving those who serve".

ARMY CODE = 13125

NAVY CODE = 13160

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COMMUNICATIONS RECEIVER – 131115

SHORT TITLE: COMM, RCVR

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

FUM: SF

All fixed transmitters for the control tower, air-ground GCA and RAPCON facilities are installed at one location and the associated receiver equipment should be installed with them if possible.

ARMY CODE = 13170

NAVY CODE = 13135

COMMUNICATIONS‐TRANSMITTER/RECEIVER – 131116

SHORT TITLE: COMM, TMTR RCVR

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

FUM: SF

All fixed transmitters for the control tower, air-ground GCA and RAPCON facilities are installed at one location and the associated receiver equipment should be installed with them if possible. (RAPCON = RADAR APPROACH

CONTROL GCA = GROUND CONTROLLED APPROACH)

COMMUNICATIONS TRANSMITTER – 131117

SHORT TITLE: COMM, TMTR RCVR

RPA TYPE CODE: B

UM1: SF

UM2:

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All fixed transmitters for the control tower, air-ground, GCA and RAPCON facilities are installed at one location and the associated receiver equipment should be installed with them if practical. (RAPCON = RADAR

APPROACH CONTROL GCA = GROUND CONTROLLED APPROACH)

Fixed GCA

NAVY CODE = 13150

RADIO RELAY FACILITY – 131118

SHORT TITLE: RAD RELAY FCLTY

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

FUM: SF

Electronic equipment and associated radio facilities necessary to support the relay of radio communications information. These stations are usually unattended and require only periodic inspections and maintenance.

NAVY CODE = 13120

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AMERICAN FORCES RADIO AND TELEVISION STATION – 131119 (AFR&T STA)

SHORT TITLE: AFR&T STN

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1441

FAC TITLE: Photo/TV Production Building

Radio and television studio set up for the American Armed Forces.

AFN Baghdad

NAVY CODE = 74027

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SATELLITE COMMUNICATIONS GROUND TERMINAL – 131132

SHORT TITLE: SAT COMM GND TRML

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1312

FAC TITLE: Satellite Communications Building

FUM: SF

Communications interface from terrestrial ground or radio systems, or from another satellite terminal in back-to-back configuration, to a remote satellite communications terminal via a space craft relay. Criteria will vary with type of terminal.

The concrete “ring” that supports the “bubble” is real property; the “bubble” is equipment and protects the satellite dish inside.

NAVY CODE = 13124

COMMUNICATIONS, SCATTER – 131133

SHORT TITLE: COMM, SCATTER

RPA TYPE CODE: B

UM1: SF

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Special communications facility that houses high power UHF Radio Transmitters and receivers with large parabolic antennas capable of communicating beyond 150 miles by "scattering" off the troposphere. The facility is also used to span rugged terrain beyond the range of microwave equipment, typically used in arctic and remote regions.

Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 MHz and 3 GHz, also known as the decimetre band as the wavelengths range from one to ten decimetres. Radio waves with frequencies above the UHF band fall into the SHF (super-high frequency) or microwave frequency range. Lower frequency signals fall into the VHF (very high frequency) or lower bands. UHF radio waves propagate mainly by line of sight; they are blocked by hills and large buildings although the transmission through building walls is high enough for indoor reception. They are used for television broadcasting, cordless phones, walkie-talkies, personal radio services satellite communication, cell phones and numerous other applications.

AIRCOM RELAY CENTER – 131134

SHORT TITLE: AIRCOM REL CEN

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

FUM: SF

Facility used to transmit or pass messages from one tributary to another automatic, semiautomatic or manual means, or by electrically connecting circuits between tributaries for direct transmission. The facility consists of a radio operations room, relay equipment room, technical control room, crypto room, maintenance room, teletype room and

AFCatcodes 2016 v1.0 Page 46 relay operations administrative room. A microwave relay room is also required in many situations. The size of the building will be determined by the communications-electronics engineering agency to meet specific requirements when not collocated with the base telecommunications facility. An incinerator is required in the immediate vicinity of the record communication/crypto area.

AUTOMATIC SWITCHING CENTER – 131135

AUTODIN Security

SHORT TITLE: AUTO SWITCHING CEN

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

FUM: SF

Facility which transmits and receives AUTODIN messages to and from Military communications centers worldwide. Every ASC is housed in a special compartmented information facility and is equipped with solid state uninterruptible power systems and environmental controls.

Required security protection must be extended to all classified traffic transmitted through the AUTODIN. The ASC automatically checks and compares the security classification stated in the header of the message against the authorized security level of the incoming circuit. Transmission of a message with a higher security level than authorized will result in the message being rejected by the ASC.

In addition, an automatic system-generated service will be transmitted by the ASC to the originating station. The purpose of this service is to advise the originating station of possible security compromises. Also, the ASC automatically checks and compares the security classification contained in the header of each message against the security classification of each destination. A security mismatch occurs for each destination that does not indicate a matching security level.

In the event of a security mismatch, the ASC takes the following actions:

In a single-address message, the ASC rejects the message and alarms appear at the originating terminal indicating that the message needs retransmission.

In a multiple-address message with at least one deliverable destination, the ASC accepts the message and delivers it to all valid destinations. For invalid routing indicators, an automatically generated service retransmits the message to the originating routing indicator and advises that the message needs retransmission.

In-station operating procedures should be carefully planned and rigidly enforced to prevent inadvertent transmission of classified messages to unauthorized stations or agencies. Complete security precautions and operating rules are contained in JANAP 128.

AUTODIN = Automatic Digital Network

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The Automatic Digital Network System, known as AUTODIN or ADNS, is a legacy data communications service in the United States Department of Defense. AUTODIN originally consisted of numerous AUTODIN Switching Centers (ASCs) located in the United States and in countries such as England and Japan.

NAVY CODE = 13142

AIRCOM RECEIVER – 131136

SHORT TITLE: AIRCOM RCVR

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

FUM: SF

Communications facility located on a separate site at least eight miles from the transmitter site and five to twenty miles from the base. The facility houses communications technical equipment and power units.

ARMY CODE = 13170

NAVY CODE = 13135

AIRCOM TRANSMITTER – 131137

SHORT TITLE: AIRCOM TMTR

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

FUM: SF

Communications facility located on a separate site at least eight miles from the receiver site and five to twenty miles from the base. The facility houses communications technical equipment and power units.

ARMY CODE = 13160

NAVY CODE = 13150

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HIGH FREQUENCY AIRCOM MICROWAVE RELAY – 131138

SHORT TITLE: HF AIRCOM MICROW R

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

FAC TITLE: Communications Building

Communications facility that provides the control link between the transmitter, receiver and relay center.

Cheyenne Mountain CO

ARMY CODE =N/A

NAVY CODE = 13122

AIRCOM RADIO RELAY – 131139

SHORT TITLE: AIRCOM RADIO RELAY

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

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A typically unmanned communication facility designed to overcome terrain limitations and quantity and quality of traffic channels in order to provide clear radio signals between tributary locations.

GAP FILLER – 131143

SHORT TITLE: GAP FILLER

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1311

A small search radar facility that scans areas where larger surveillance radars have "blind spots" or gaps in their coverage caused by mountains or other geographic features. Gap Fillers are used in air traffic control and Air Defense applications.

A radar used to supplement the coverage of the principal radar in areas where coverage is inadequate.

SPACE OPERATIONS FACILITY – 131200

SHORT TITLE: SPACE OPS FACILITY

RPA TYPE CODE: B

UM1: SF

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FUM: SF

Focal point for command, control of and mission communications with satellites. Typically includes a Space Operations Center, computer room, simulator/emulator, admin and training, and a conference room. Protection level (PL) is normally level one or level two. May require an area for tech support, scheduling, orbital analysis, anomaly resolution and a SCIF. (SCIF should be a D record/other allocation under cat code 140422) SCIF = Sensitive Compartmented Information Facility

In United States military, security and intelligence parlance, a Sensitive Compartmented Information Facility (SCIF; pronounced "skiff") is an enclosed area within a building that is used to process Sensitive Compartmented Information (SCI) types of classified information. SCI is classified information concerning or derived from intelligence sources, methods, or analytical processes, which is required to be handled within formal access control systems established by the Director of National Intelligence (DNI). Some entire buildings are SCIFs where all but the front foyer is secure. Access to SCIFs is normally limited to those with clearance.[1] Non-cleared personnel in SCIF must be under constant oversight to prevent unauthorized access to classified material;[2] as part of this process, non-cleared personnel are typically required to surrender recording and other electronic devices.[3] All of the activity and conversation inside is presumed restricted from public disclosure. A SCIF can also be located in an air, ground or maritime vehicle, or can be established on a temporary basis at a specific site.

Charles Justice, 45 SW Patrick AFB FL

Buckley AFB CO

ARMY CODE = Multiple possibilities NAVY CODE = Multiple possibilities (See 6 – 5 Digit Cat Code Equivalents list)

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SILO HARDENED HF ANTENNA – 132131

SHORT TITLE: SILO, HD ANT HF

RPA TYPE CODE: S

UM1: EA

UM2:

FAC: 1321

FAC TITLE: Communications Facility

FUM: EA

This antenna is housed in a hardened silo. The antenna is raised in an upright position when charges are used to blow the capsule for missile launch.

ARMY CODE = 13220

NAVY CODE = 13210

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PAD, EQUIPMENT – 132133

SHORT TITLE: PAD EQUIP

RPA TYPE CODE: LS

UM1: SY

UM2:

FAC: 8526

FAC TITLE: Miscellaneous Paved Area

FUM: SY

General purpose concrete pad used to support communications equipment such as air conditioners, generators, towers, etc.

Concrete Pad Transformer Pad

Generator Pad Air Conditioner Pad

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Gas Meter Pad Electrical Equipment Pad

ARMY CODE = 85225

NAVY CODE = 85235

ANTENNA SUPPORT STRUCTURE – 132134

SHORT TITLE: ANT SPT STRU

RPA TYPE CODE: S

UM1: EA

UM2:

FAC: 1321

FAC TITLE: Communications Facility

FUM: EA

This category code identifies towers, tower guys, antenna poles, concrete footings and hardstands supporting communications-electronics equipment.

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45 SW Charles Justice

Close up of guy wires

ARMY CODE = 13220

NAVY CODE = 13210

NON‐DIRECTIONAL BEACON (BUILDING) – 133101

SHORT TITLE: NON-DIR BEACON BLDG

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1331

FAC TITLE: Aircraft Navigation Building

FUM: SF

This Non-Directional Beacon (NDB) facility is an unattended facility which houses electric equipment (radio beacon) used to transmit a non-directional radio signal pattern to aircraft equipped with Automatic Radio Direction and Finding (ADF) equipment. The signal is used by the aircraft for homing and radio fix assistance. The radio beacon may be employed for voice or tone modulated transmission. The facility consists of an equipment building with adjoining or adjacent space with emergency standby power and an antenna mounted on an antenna support.

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ARMY CODE = 13320

NAVY CODE = 13335

UHF DIRECTION FINDING – 133314

SHORT TITLE: DIR FINDING, UHF

RPA TYPE CODE: B

UM1: SF

UM2:

FAC: 1331

FAC TITLE: Aircraft Navigation Building

FUM: SF

This code is provided to identify the installation for UHF antennas.

Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 MHz and 3 GHz, also known as the decimeter band as the wavelengths range from one to ten decimeters. Radio waves with frequencies above the UHF band fall into the SHF (super-high frequency) or microwave frequency range. Lower frequency signals fall into the VHF (very high frequency) or lower bands. UHF radio waves propagate mainly by line of sight; they are blocked by hills and large buildings although the transmission through building walls is high enough for indoor reception. They are used for television broadcasting, cordless phones, walkie-talkies, personal radio services satellite communication, cell phones and numerous other applications.

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WIND MEASURING EQUIPMENT – 134101

SHORT TITLE: WIND MEASURING EQUIPMENT

RPA TYPE CODE: S

UM1: EA

UM2:

FAC: 1341

FAC TITLE: Aircraft Navigation Facility

FUM: EA

Navigational aid designed for measuring weather condition.

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ARMY CODE = 13470

NAVY CODE = 13462/13471

AUTOMATIC METEROLOGICAL STATION – 134102

SHORT TITLE: AUTOMATIC METEROLOGICAL STATION

RPA TYPE CODE: S

UM1: EA

UM2:

FAC: 1341

FAC TITLE: Aircraft Navigation Facility

Weather station designed to measure meteorological events automatically.

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NAVY CODE = 13471

RUNWAY DISTANCE MARKERS – 134103

SHORT TITLE: RUNWAY DIST MARKERS

RPA TYPE CODE: S

UM1: EA

UM2:

FAC: 1341

FAC TITLE: Aircraft Navigation Facility

FUM: EA

Markers on runways to indicate the remaining distance on a runway. Usually in large numerals indicating hundreds or thousands of feet remaining to the end of the runway.

The remaining distance on a runway is indicated by large numerals indicating hundreds or thousands of feet remaining to the end of the runway. The distance markers inform the pilot taking off of the remaining distance to the end of the runway so that the pilot may know whether an aborted takeoff is possible and so that the pilot of a landing aircraft may calculate necessary braking action to stop the aircraft short of the runway end. The marker is constructed of a readily collapsible aluminum angle frame having a triangular base pyramid form. The apex of the pyramid is positioned directly over a standard runway light. Anchors at vertices of the base provide easy anchoring independent of the lighting system. A translucent plate covers one triangular side and is held in place by a triangular retainer made of angle aluminum pieces which fit over corresponding pieces in the frame. A large opaque number is positioned centrally on the plate. (4.3’ x 4.3’)

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RUNWAY…