Attachment J-2 - FAA-E-3002.pdf

FAA-E-3002

REV _1

Department of Transportation

FEDERAL AVIATION ADMINISTRATION

PERFORMANCE SPECIFICATION

RUNWAY STATUS LIGHTS (RWSL)

FIELD LIGHTING SYSTEM (FLS)

DECEMBER 21, 2012

ATO-T Terminal Services, Surveillance Sector Federal Aviation Administration 800 Independence Avenue, SW

Washington, DC 20591

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.

REVISIONS SUMMARY PAGE

Change Letter Description of Change Changed By Approved By 1 Minor edits to overview section.

Updated reference EB64C to D revision.

Added reference to FAA-C-1217F Updated section 2.1 reference 12, EB64C changed to EB64D dated 5/9/11.

Updated requirements for the Cabinet or Rack Construction, Disconnect Switch and Utility Transformer

E. Chartier M. Scheufler

B. Halabi

12/21/12 i

TABLE OF CONTENTS

1. Scope

1.1 Scope

1.2 System Overview

1.3 FLS Functions and Components

1.4 FLS Operational Overview

1.5 RWSL System Maintenance Overview

2. Applicable Documents

2.1 FAA Documents

2.2 Non-FAA Government Documents

2.3 Non-Government Documents

3. Requirements

3.1 FLS Performance Requirements

3.1.1 FLS Light Command Processing

3.1.2 REL/THL Illuminate/Extinguish

3.1.3 FLS Internal Communications

3.1.4 Kill Switch

3.1.5 System Timing

3.1.6 System States

3.1.7 Interface Timeouts

3.1.8 Message Error Handling

3.1.9 Monitoring and Reporting

3.1.10 Component Identification

3.1.11 Light Grouping

3.1.12 Message Time-Stamping

3.1.13 Time Synchronization

3.1.14 Circuit Loading

3.1.15 Electromagnetic Interference

3.2 Maintenance Requirements

3.2.1 Remote Maintenance Interface Requirements

3.3 Equipment Requirements

3.3.1 Outdoor Environment

3.3.2 Light Fixtures

3.3.3 Runway Entrance Light Fixtures

3.3.4 Takeoff Hold Light Fixtures

3.3.5 Light Fixture Bases

3.3.6 Individual Light Controller

3.3.7 Repeaters

3.3.8 Isolation Transformers

3.3.9 Underground Electrical Cable for Airport Lighting Circuits

3.3.10 Constant Current Regulators

3.3.11 FLS Component Quantities

3.3.12 Light Computer

3.3.13 Master Light Controller

3.3.14 Remote Maintenance Terminal

3.3.15 Cabinet or Rack Construction

12/21/12 ii

3.3.16 Shelter Equipment

3.3.17 Disconnect Switch

3.3.18 480 Volt AC Input Panel

3.3.19 High Voltage Output Cabinet

3.3.20 Utility Transformer

3.3.21 Distribution Panel

3.3.22 Warning signs

4. Verification

5. Reserved

6. Notes

6.1 Glossary

6.2 Acronyms and Abbreviations

12/21/12 3

1. SCOPE

1.1 Scope

This specification establishes the performance requirements for the Field Lighting System (FLS).

The FLS is a subsystem within the larger RWSL system. It is responsible for powering, switching, and monitoring the light fixtures on the airfield as commanded by another RWSL subsystem, the RWSL Processor (RP). Requirements governing the interface to the RP and the RWSL System itself are contained in separate documents.

1.2 System Overview

The FLS controls two types of light arrays in response to commands from the RP: Runway Entrance Lights (REL) and Takeoff Hold Lights (THL). REL fixtures are situated at selected runway-taxiway intersections and face the taxiways. They are illuminated when it is unsafe to enter the runway. THL fixtures are situated at selected full-length and intersection takeoff-hold positions on the runway. They are illuminated when it is unsafe for an aircraft to take off on the runway. REL and THL fixtures are similar physically in that they are both red in-pavement light fixtures. They differ mainly in their placement, the beam width, and the logic that controls them in the RP. More detailed information on the RWSL light control logic is contained in the RWSL System Specification1 document.

The rules for designing REL and THL layouts are found in Advisory Circular 150/5340-30D as the base reference with updates superseding the A/C found in EB64D. For conditions not covered in the A/C or in the EB64D, designers must consult with the program office for guidance.

1.3 FLS Functions and Components

The FLS is responsible for the following functions:

• Managing the interface to the RP

• Carrying out light activation/deactivation commands by switching the appropriate lights

• Monitoring the functional status of internal components as identified in this specification

• Alerting the RP of any failed components with details of the fault

• Providing system and component status on a maintenance display that is viewable remotely

• Accepting user input to configure the light identification and light grouping information specific to the local airport

The FLS is a single, fully-integrated system, comprised of the following minimum components:

1. One Light Computer (LC) responsible for hosting the interface to the RWSL Processor and providing a single point of control for the FLS

2. Two or more airfield lighting circuits providing power, control, and monitoring of all lights.

3. Two or more Constant Current Regulators (CCR) and all necessary power cables and supporting equipment to power the light fixtures on individual lighting circuits

4. Light control and monitoring equipment including:

a. Master Light Controllers (MLC) associated with lighting circuits

b. Individual Light Controllers (ILC) associated with light fixtures

c. Isolation Transformers associated with light fixtures

12/21/12 4

d. Zero or more Repeater units to support communications where the circuit length, the number of ILC units, or other factors drive the need for their use

5. In-pavement light fixtures (REL and THL units) including light bases and all supporting equipment necessary

1.4 FLS Operational Overview

During operation, the FLS will receive light control command messages addressed to configurable groups of REL and THL fixtures from the RP. In addition, the FLS will receive commands addressed to individual CCR units to set the brightness level for the corresponding lighting circuit. In the event of light fixture or ILC faults, the FLS will transmit alert messages to the RP identifying the light fixture or ILC and details as to the nature of the fault.

The LC will communicate with each lighting circuit via the MLC units to control and monitor the light fixtures. Individual light fixtures will be powered and controlled via the associated isolation transformer and ILC unit. In the event of CCR or MLC faults, the FLS will transmit alert messages to the RP identifying the CCR or MLC and details as to the nature of the fault.

The REL and THL fixtures are automatically extinguished if a significant system failure occurs.

In the remote possibility that an undiagnosed partial failure of the RP or FLS subsystems occurs that might leave light fixtures in the illuminated state, a kill switch is provided in the Air Traffic Control Tower cab This allows Air Traffic Controllers a rapid and independent means of extinguishing all RWSL fixtures by directly signaling the Constant Current Regulators to shut down power output to the light fixture circuits.

The LC will be co-located with the RP in the air traffic control tower secure equipment area. CCR and MLC units will be located in lighting equipment shelters on or near the airfield. The number of field lighting circuits and the number of lights on a circuit will be determined by the configuration designed for the specific airport. Multiple shelters may be used for some airport configurations.

A top-level block diagram showing the key functional components of the FLS as defined above and their interconnections is shown below in Figure Figure 1. The FLS implements internal communications for switching and monitoring the remote light fixtures on the airfield using power line carrier technology. Notice that lights, ILC units and isolation transformers are associated and occur in sets. Note that CCR units and MLC units are associated and occur in sets.

Repeaters are optional and may be isolated components or may be integrated in ILC units.

Figure 1: FLS Component Interconnections

12/21/12 5

1.5 RWSL System Maintenance Overview

The RWSL system provides a maintenance terminal that presents detailed status of the overall system and individually monitored components and also supports user configuration of the logical component identifiers and the group identifiers for light fixtures. This maintenance terminal is located in the ATCT equipment room. This information must also be displayed remotely in any airfield equipment shelter hosting FLS CCR and MLC components.

Maintenance will be conducted according to corrective and periodic maintenance procedures.

Corrective maintenance procedures will be undertaken in response to significant FLS faults that impair the RWSL system. Periodic maintenance may include visual inspections of the light fixtures to ensure their proper alignment and integrity. The maintainers of the FLS will use either the local display in the ATCT or a remote display in the airfield equipment shelters to view detailed FLS component fault information needed to conduct corrective or periodic maintenance procedures.

2. APPLICABLE DOCUMENTS

The following documents of the exact issue shown form a part of this specification to the extent specified herein. In the event of a conflict between the document referenced herein and the contents of this specification, the contents of this specification shall be considered the superseding requirement.

2.1 FAA Documents

1. FAA-E-3001, Performance Specification, Runway Status Lights (RWSL) System, December 21, 2012.

2. RWSL Processor to Field Lighting System Interface Control Document, 3/17/08.

3. FAA Advisory Circular 150/5345-46D, Specification for Runway and Taxiway Light

Fixtures, 5/19/2009.

4. FAA Advisory Circular 150/5345-26C, Specification for L-823 Plug and Receptacle, Cable Connectors, 4/17/2000.

5. FAA Advisory Circular 150/5345-42F, Specification for Airport Light Bases, Transformer Housings, Junction Boxes, and Accessories, 10/17/2006.

6. FAA Advisory Circular 150/5345-47B, Specification for Series to Series Isolation

Transformers for Airport Lighting Systems, 6/30/2005.

7. FAA Advisory Circular 150/5345-7E, Specification for L-824 Underground Electrical

Cable for Airport Lighting Circuits, 8/2/2001.

8. FAA Advisory Circular 150/5345-10F, Specification for Constant Current Regulators and

Regulator Monitors, 6/24/2005.

9. FAA Advisory Circular 150/5340-30D, Design and Installation Details for Airport Visual

Aids, 9/30/2008.

10. FAA-G-2100H, Specification Electronic Equipment General Requirements, 5/9/2005.

11. FAA-STD-019E, Lightning and Surge protection, Grounding, Bonding and Shielding

Requirements for Facilities and Electronic Equipment, 12/22/2005.

12. Engineering Brief #64D, 5/9/2011

13. FAA-C-1217F, Specification: Electrical Work, Interior, 2/26/1996

2.2 Non-FAA Government Documents

None.

12/21/12 6

2.3 Non-Government Documents

14. ITE Standard ST-017, Standard for Vehicle Traffic Control Signal Heads

15. IETF STD-5, Internet Protocol, Version 4 (IPv4) (includes IETF RFCs 791, 792, 919, 922, 950, and 1112), dated September 1981

16. IETF STD-6, User Datagram Protocol (UDP) (includes IETF RFC 768), dated August

17. IETF RFC 1305, Network Time Protocol (NTP) (Version 3) Specification, Implementation and Analysis, dated March 1992, (NTP draft version 4 may also be used in accordance with references at http://www.eecis.udel.edu/~mills/ntp/html/index.html)

3. REQUIREMENTS

3.1 FLS Performance Requirements

3.1.1 FLS Light Command Processing

3.1.1.1 The FLS shall [F1] receive light commands, light intensity commands, and other control, configuration, and message acknowledgement information from the RP in accordance with the FLS-RWSL Processor ICD 2.

3.1.1.2 The FLS shall [F2] send status alerts and other message acknowledgement information to the RP in accordance with the FLS-RWSL Processor ICD 2.

3.1.2 REL/THL Illuminate/Extinguish

3.1.2.1 The FLS shall [F3] process light command messages from the RP and illuminate and extinguish REL and THL arrays as commanded by the RP in accordance with the RWSL System Specification1 and the FLS-RWSL Processor ICD 2.

3.1.3 FLS Internal Communications

3.1.3.1 The FLS shall [F4] use power line carrier technology for internal communications between the MLC and the ILC units.

3.1.4 Kill Switch

3.1.4.1 The FLS shall [F5] include a kill switch control to allow manual intervention to cut power from all CCR units to all light circuits included within the FLS.

3.1.4.2 The kill switch shall [F6] be installed in each Air Traffic Control Tower cab.

3.1.4.3 The kill switch control circuit shall [F7] use a physical communications infrastructure that is independent of that used for the RP-to-FLS interface and that used by any other internal FLS communications pathways to the equipment shelters where the CCR units are located.

3.1.4.4 The kill switch shall [F8] include a guard to prevent accidental shutoff of the CCR units.

3.1.4.5 The kill switch shall [F9] disable the CCR units when activated.

12/21/12 7

3.1.4.6 The kill switch shall [F10] disable the CCR units when a kill switch failure or malfunction is detected.

3.1.5 System Timing

3.1.5.1 All timing requirements shall [F11] be met by an FLS with 15 light circuits, 1000 light fixtures, and with any required repeaters.

3.1.5.2 The command response time shall [F12] less than or equal to 300 milliseconds for all commands, excluding reboot commands.

3.1.5.3 The alert generation time shall [F13] be less than or equal to 3.0 seconds for all alert conditions.

3.1.5.4 The light illumination time shall [F14] be less than or equal to 1.0 second for 98% of illuminations and 2.3 seconds maximum for 100% of illuminations, for the highest light intensity level setting.

3.1.5.5 The light extinguish time shall [F15] be less than or equal to 1.0 second for 98% of extinguishments and 2.3 seconds maximum for 100% of extinguishments, for the highest light intensity level setting.

3.1.5.6 The ILC switching time shall [F16] be less than or equal to 400 milliseconds for 98% of light state changes and 1.5 seconds maximum for 100% of light state changes.

3.1.5.7 The light intensity change time shall [F17] be less than or equal to 10.0 seconds for all light intensity changes.

3.1.6 System States

3.1.6.1 Power-Up State

3.1.6.1.1 The FLS shall [F18] enter the power-up state within 2 minutes after application of power, power cycling, or following a commanded reboot or an interruption of power.

3.1.6.1.2 The FLS shall [F19] initialize the system in the power-up state such that all lights are in the extinguished state, all lighting intensity levels (i.e., CCR power levels) are set to zero, and all pending alerts and replies are canceled.

3.1.6.1.3 Requirement [F20] deleted.

3.1.6.1.4 The FLS shall [F21] enter the online state after completing the power-up state initialization process without error. The FLS shall [F21.1] enter the offline state after completing the power-up state initialization process with error.

3.1.6.2 Dynamic Power-Up State

3.1.6.2.1 The FLS shall [F22] enter the dynamic power-up state upon receipt of a reinitialize command or following any timeout.

12/21/12 8

3.1.6.2.2 The FLS shall [F23] extinguish all lights, reset all message flags, and clear all temporary message storage associated with handling RP interface communications upon entering the dynamic power-up state without conducting the reinitialize or reboot procedures.

3.1.6.2.3 The FLS shall [F24] maintain the light intensity level settings for all CCR units upon entering the dynamic power-up state.

3.1.6.2.4 Requirement [F25] deleted.

3.1.6.2.5 The FLS shall [F26] enter the online state after completing the dynamic power-up state initialization process without error. The FLS shall [F26.1] enter the offline state after completing the dynamic power-up state initialization process with error.

3.1.6.2.6 The FLS shall [F27] complete the dynamic power-up state initialization process from entry of the dynamic power-up state through exit of the dynamic power-up state within 5.0 seconds.

3.1.6.3 The FLS shall [F28] keep all lights in the extinguished state while in the dynamic power-up state.

3.1.6.4 Reboot Command

3.1.6.4.1 The FLS shall [F29] send a "set state acknowledge" reply message, immediately execute a system reboot, and then enter the power-up state after receiving a “set state power-up” command message from the RP.

3.1.6.5 Reinitialize Command

3.1.6.5.1 The FLS shall [F30] send a "set state acknowledge" reply message and enter the dynamic power-up state after receiving a “set state dynamic power-up” command message from the RP.

3.1.6.6 Off-Line State

3.1.6.6.1 The FLS shall [F31] provide an off-line state.

3.1.6.6.2 The FLS shall [F32] place all light fixtures in the extinguished state while in the off-line state.

3.1.6.6.3 The FLS shall [F33] prohibit FLS configuration changes unless the FLS is in the offline state.

3.1.7 Interface Timeouts

3.1.7.1 Keep-Alive Timeouts

3.1.7.1.1 The FLS shall [F34] indicate a “communication link failure” in the FLS system status message if the FLS fails to receive any message from the RP within any 5.0 second interval.

3.1.7.1.2 Requirement [F35] deleted.

3.1.7.2 Alert Reply Timeouts

12/21/12 9

3.1.7.2.1 Requirement [F36] deleted.

3.1.7.2.2 Requirement [F37] deleted.

3.1.7.2.3 Requirement [F38] deleted.

3.1.7.2.4 Requirement [F39] deleted.

3.1.8 Message Error Handling

3.1.8.1 Requirement [F40] deleted.

3.1.8.2 Requirement [F41] deleted.

3.1.8.3 The FLS shall [F42] discard received messages with one or more formatting errors including but not limited to; invalid frame errors, invalid length errors, and invalid control word errors.

3.1.8.4 Requirement [F43] deleted.

3.1.8.5 Requirement [F44] deleted.

3.1.8.6 Requirement [F45] deleted.

3.1.8.7 Requirement [F46] deleted.

3.1.8.8 Requirement [F47] deleted.

3.1.9 Monitoring and Reporting

3.1.9.1 The FLS shall [F48] automatically report all detected component faults to the RP in the FLS system status message indicating the failed equipment in accordance with the FLS-RWSL Processor ICD2. The FLS shall [F48.1] include the health of each unique LC, ILC, fixture (i.e.

filament), CCR, and MLC in the system. This health information shall [F48.2] include the communication status between the LC and the FLS, the communication status between the LC and MLC units, between MLC units and all associated ILC units, and the LC and all CCR units.

3.1.9.2 The FLS shall [F49] indicate in the FLS status message if the FLS has not received a command from the RP within the previous 5 seconds.

3.1.9.3 Requirement [F50] deleted.

3.1.9.4 Requirement [F51] deleted.

3.1.9.5 Requirement [F52] deleted.

3.1.9.6 Requirement [F53] deleted.

3.1.9.7 Requirement [F54] deleted.

3.1.9.8 Requirement [F55] deleted.

12/21/12 10

3.1.9.9 The FLS shall [F56] declare any light fixture failed whose current state of illumination (on/off) does not match the commanded state. The FLS shall [F57] declare any light fixture failed whose state can not be determined.

3.1.9.10 The FLS shall [F58] shutdown power to the entire circuit containing a light fixture whose state of illumination cannot be determined.

3.1.10 Component Identification

3.1.10.1 The FLS subsystems shall [F59] be identified with nameplates as in accordance with FAA-G-2100 H paragraph 3.3.3.1.

3.1.10.2 All FLS LRUs shall [F60] be marked in accordance with FAA-G-2100h paragraph 3.3.3.2.

3.1.11 Light Grouping

3.1.11.1 The FLS shall [F61] command multiple light fixtures associated with configurable light group identifiers.

3.1.11.2 The FLS ILC units shall [F62] be individually configurable for membership in at least four light groups.

3.1.11.3 The FLS shall [F63] configure light groups that may include light fixtures powered by one or more separate, independent light circuits.

3.1.12 Message Time-Stamping

3.1.12.1 The FLS shall [F64] maintain a time reference, with resolution of at least 1 millisecond, for inclusion in the time field of messages transmitted to the RP.

3.1.13 Time Synchronization

3.1.13.1 The LC shall [F65] maintain its clock synchronization with the RWSL system utilizing a Network Time Protocol (NTP) client associated with an NTP server at a configurable IP address.

3.1.14 Circuit Loading

3.1.14.1 The FLS shall [F66] turn 1000 lights on within all specified performance requirements, without causing, or producing a condition that causes any of the CCR units to shut down.

3.1.15 Electromagnetic Interference

3.1.15.1 FLS performance shall [F67] be unaffected by electromagnetic interference associated with signals generated by other airfield equipment.

3.2 Maintenance Requirements

3.2.1 Remote Maintenance Interface Requirements

12/21/12 11

3.2.1.1 The remote maintenance terminal shall [F68] provide the same complete detailed overall FLS system level and individual component health and status information as provided by the RWSL system maintenance terminal.

3.2.1.2 The remote maintenance terminal shall [F69] be able to control light fixtures, circuits, arrays, and groups and support input of adaptation changes needed when replacing some LRUs.

3.2.1.3 The health status information shown on any FLS maintenance displays shall [F70] be refreshed such that any internal component status change information is displayed within 3 seconds of the actual status change.

3.3 Equipment Requirements

3.3.1 Outdoor Environment

3.3.1.1 All FLS components exposed to the outdoor environment or contained within light bases shall [F71] operate in an underground, fully submerged condition.

3.3.2 Light Fixtures

3.3.2.1 The light fixtures shall [F72] be powered via isolation transformers.

3.3.2.2 The light fixtures shall [F73] be switched and monitored by Individual Light Control (ILC) units.

3.3.2.3 The light fixtures shall [F74] each provide a grounding lug to provide a safety ground connection to a grounding lug within the associated light base.

3.3.3 Runway Entrance Light Fixtures

3.3.3.1 REL fixtures shall [F75] conform to FAA AC 150/5345-46D, Specification for Runway and Taxiway Light Fixtures, Type L-852S, Class 2 (base-mounted), Mode 1 (Constant current fixture, supplied by 6.6 amp), Style 3 (total height above finished grade < ¼ inch [6mm]), traffic signal red per the ITE Standard for Vehicle Traffic Control Signal Heads (ST-017).

3.3.3.2 Each REL fixture shall [F76] be provided with an L-823-Type Plug for Light Fixtures as specified in FAA AC 150/5345-26C, Specification for L-823 Plug and Receptacle, Cable Connectors.

3.3.4 Takeoff Hold Light Fixtures

3.3.4.1 THL fixtures shall [F77] conform to FAA AC 150/5345-46D, Specification for Runway and Taxiway Light Fixtures, Type L-850T, Class 2 (base-mounted), Mode 1 (Constant current fixture, supplied by 6.6 amp), Style 3 (total height above finished grade < ¼ inch [6mm]), Unidirectional, traffic signal red per the ITE Standard for Vehicle Traffic Control Signal Heads

(ST-017).

3.3.4.2 Each THL fixture shall [F78] be provided with an L-823-Type Plug for Light Fixtures as specified in FAA AC 150/5345-26C, Specification for L-823 Plug and Receptacle, Cable Connectors.

12/21/12 12

3.3.5 Light Fixture Bases

3.3.5.1 Light fixture bases shall [F79] conform to FAA AC 150/5345-42F, Specification for Airport Light Bases, Transformer Housings, Junction Boxes, and Accessories, Type L-868 Size B (12 inch diameter), 24 inch height minimum, Class I.

3.3.5.2 Requirement [F80] deleted.

3.3.5.3 Light fixture bases shall [F81] be installed with a safety ground system connecting the light fixture, the light fixture base, and a ground rod in conformance with FAA AC 150/5340- 30D, Design and Installation Details for Airport Visual Aids, section 12.6 with the following exception: The safety ground must be a #6 AWG green insulated stranded copper jumper connected to the internal ground lug in the fixture base.

3.3.6 Individual Light Controller

3.3.6.1 Each ILC shall [F82] be located in the light base associated with the light fixture it is to control and monitor.

3.3.6.2 Each ILC shall [F83] power, control, and monitor the operation of the lamp(s) in the light fixture (REL or THL) to which it is directly connected, in response to signals from the LC.

3.3.6.3 ILC units shall [F84] monitor and report the health and on/off status of each lamp in the light fixture.

3.3.6.4 ILC units shall [F85] enter the extinguished state (“off”) upon power-up, or in response to any power interruption of greater than two seconds.

3.3.6.5 ILC units shall [F86] enter the extinguished state in less than or equal to 3 seconds if communication with the MLC is lost.

3.3.6.6 ILC units shall [F87] fail to the extinguished state.

3.3.6.7 An individual ILC unit failure shall [F88] not cause a failure of the light circuit that it is connected to.

3.3.6.8 The ILC shall [F89] operate with power from a constant current circuit.

3.3.6.9 The ILC shall [F90] operate without diverting current from the lamp.

3.3.6.10 The ILC shall [F91] operate using a nominal line frequency of 60 Hz.

3.3.6.11 The ILC shall [F92] place a load across the secondary side of the isolation transformer to maintain circuit loading if a light filament fails.

3.3.6.12 The ILC shall [F93] be designed and constructed so that no parts will work loose in service.

3.3.6.13 The ILC shall [F94] withstand strains, jars, vibrations, and other conditions incident to shipping, storage, installation, and service.

12/21/12 13

3.3.6.14 The ILC shall [F95] operate when immersed in water and buried in the ground with runway deicing agents present.

3.3.6.15 The ILC shall [F96] be constructed for continuous outdoor service at temperatures from - 67 to 149 degrees Fahrenheit (F) (-55 to +65 Celsius (C)).

3.3.6.16 The ILC shall [F97] be encapsulated in a sealed watertight case.

3.3.6.17 The ILC case minimum strength requirements are defined as follows:

1. Tensile strength shall [F98] be greater than or equal to 1200 pounds per square inch (psi) or 84 kilograms (kg)/square centimeter (cm2).

2. Tensile strength shall [F99] be greater than or equal to 1000 psi or 70 kg/cm2. after 96 hours oxygen bomb test.

3. Tensile strength shall [F100] be greater than or equal to 1000 psi (70 kg/cm2) after 168 hours in an oven at 157° - 159° F (69°C - 71°C).

4. Durometer hardness shall [F101] be equal to 65 ± 10 measured per ASTM D 2240.

3.3.6.18 The ILC shall [F102] withstand exposure to sunlight, oil, gasoline, water, and runway deicing fluids.

3.3.6.19 The ILC shall [F103] be constructed so it may be installed upright or lying on any side.

3.3.6.20 The ILC shall [F104] fit into a cylinder less than or equal to12 inches (in.) (30.4 centimeters (cm)) diameter by 10 in. (25.4 cm) height.

3.3.6.21 The junction of the ILC case and lead sheath shall [F105] not crack or be damaged when the ILC is carried by one lead or when the leads are bent during testing and installation.

3.3.6.22 The ILC case shall [F106] provide a watertight junction and reinforcing area for the leads.

3.3.6.23 The ILC case lead reinforcing area shall [F107] be at least 25 percent greater than the outside diameter of the connecting leads.

3.3.6.24 The reinforcing area shall [F108] be a cone shape around the individual leads or a continuous ridge enclosing both leads.

3.3.6.25 The ILC case reinforced area shall [F109] form an integral bond with the cable sheath inside the cone or ridge.

3.3.6.26 The ILC case shall [F110] show no permanent indentation marks when subjected to finger pressure at any point.

3.3.6.27 The ILC shall [F111] be provided with a L-823-Type Receptacle for Light Fixtures and an L-823-Type Plug for Isolation Transformers as specified in FAA AC 150/5345-26C Specification for L-823 Plug and Receptacle, Cable Connectors.

3.3.6.28 The ILC leads shall [F112] be two conductor No. 12 or 14 AWG (minimum 2 mm2) 600 volt rated cable meeting the requirements of ICEA S-95-658/NEMA WC-70.

12/21/12 14

3.3.6.29 The ILC leads shall [F113] be fastened to the ILC case so that carrying or lifting it by a single lead will not loosen the electrical connections or adversely affect its watertight properties.

3.3.7 Repeaters

3.3.7.1 Repeaters shall [F114] meet the physical requirements of the ILC.

3.3.8 Isolation Transformers

3.3.8.1 Isolation transformers shall [F115] connect ILC units to the field lighting series circuits.

3.3.8.2 Isolation transformers shall [F116] be located in the light base associated with the light fixture it is providing power for.

3.3.8.3 Isolation transformers shall [F117] conform to FAA AC 150/5345-47B, Specification for Series to Series Isolation Transformers for Airport Lighting Systems, Type L-830-18, 150 Watts,

6.6 amp Primary, 6.6 amp Secondary, 60 Hertz.

3.3.8.4 Isolation transformers shall [F118] be provided with two primary connector leads, FAA Type L-823, as specified in FAA AC 150/5345-26C, Specification for L-823 Plug and Receptacle, Cable Connectors, to permit on-site attachment of the primary side of the transformer to the field lighting series circuit.

3.3.8.5 Each isolation transformer shall [F119] be provided with one secondary connector lead, FAA Type L-823, as specified in FAA AC 150/5345-26C, Specification for L-823 Plug and Receptacle, Cable Connectors.

3.3.9 Underground Electrical Cable for Airport Lighting C ircuits

3.3.9.1 Field lighting power cable shall [F120] be used for the field lighting circuit connecting the CCR with the isolation transformers.

3.3.9.2 Field lighting power cable shall [F121] meet or exceed the requirements for FAA Type L- 824C, as specified in FAA AC 150/5345-7E, Specification for L-824 Underground Electrical Cable for Airport Lighting Circuits.

3.3.9.3 Each airfield lighting circuit shall [F122] control lights that may be geographically up to 15,000 feet from the CCR (i.e., a total circuit length of about 30,000 feet).

3.3.9.4 Airfield lighting circuits shall [F123] be installed in a dedicated underground conduit.

Underground conduits may share a common trench.

3.3.10 Constant Current Regulators

3.3.10.1 CCR units shall [F124] be either FAA Type L-828 (regulator only, no monitor) or FAA Type L-829 (monitored) as specified in FAA AC 150/5345-10F, Specification for Constant Current Regulators and Regulator Monitors.

3.3.10.2 CCR units shall [F125] be Class 1 (6.6 Amp), Style 2 (5 brightness steps), 60 Hz (frequency) as specified in FAA AC 150/5345-10F, Specification for Constant Current Regulators and Regulator Monitors.

12/21/12 15

3.3.10.3 CCR units shall [F126] be dry type.

3.3.10.4 CCR units shall [F127] be ferroresonant.

3.3.10.5 The CCR shall [F128] operate using a nominal line frequency of 60 Hz with a 480 volt single phase nominal source.

3.3.10.6 The power rating for each CCR shall [F129] be adequate to power at least 100 light fixtures on the airfield lighting circuit connected to that CCR.

3.3.10.7 The FLS shall [F130] employ one CCR for each field lighting circuit.

3.3.10.8 The FLS shall [F131] power REL and THL units with separate field lighting circuits.

3.3.10.9 The CCR shall [F132] be considered faulted if the CCR fails to stabilize the output current at any selected intensity within 5.0 seconds, and hold the output current stable within ±

0.1 amp.

3.3.11 FLS Component Quantities

3.3.11.1 The FLS shall [F133] control from 1 to 15 separate light circuits.

3.3.11.2 The FLS shall [F134] control from 6 to 1000 individual light fixtures.

3.3.12 Light Computer

3.3.12.1 The LC shall [F135] control the light fixture groups as commanded by the RWSL System in accordance with the RWSL System Specification1

3.3.12.2 The LC shall [F136] interface to the RP in accordance with the interface control document for the RWSL Processor-to-FLS interface2.

3.3.12.3 The LC shall [F137] perform message error handling functions in accordance with the interface control document for the RWSL Processor-to-FLS interface2.

3.3.12.4 The LC shall [F138] monitor all internal FLS components for fault conditions and for operational state.

3.3.12.5 The LC shall [F139] control the CCR units to set the appropriate light intensity level for the associated airfield lighting circuits as commanded by the RP.

3.3.12.6 The LC shall [F140] direct the MLC units to control and monitor the individual ILC units.

3.3.12.7 The LC shall [F141] be co-located with the RWSL processor in the ATCT equipment room.

3.3.13 Master Light Controller

3.3.13.1 One Master Light Controller shall [F142] be installed in each lighting circuit, providing the LC with the necessary control and monitoring of the ILC units on that circuit.

12/21/12 16

3.3.13.2 The MLC shall [F143] operate continuously under the following conditions:

1. Temperature range from 32 degrees to 131 degrees Fahrenheit (F) (0 degrees to 55 degrees Celsius (C)).

2. Relative humidity range from 10 to 95 percent.

3. Altitude range from zero to 6,600 feet above sea level (2,000 meters).

3.3.13.3 The MLC shall [F144] operate using a nominal line frequency of 60 Hz with a 120 volt, single phase nominal source.

3.3.13.4 The MLC shall [F145] operate normally when the input voltage is from 95 to 110 percent of its nominal value.

3.3.13.5 The MLC shall [F146] withstand momentary increases of voltage equal to 120 percent of the nominal input voltage for durations of no more than 50 milliseconds (ms) occurring less than once per minute without shutdown or damage. [Requirements F147 and F148 deleted].

3.3.13.6 [Requirement F149 deleted].

3.3.14 Remote Maintenance Terminal

3.3.14.1 One remote maintenance terminal shall [F150] be provided for each airfield lighting equipment shelter containing FLS components.

3.3.14.2 The remote maintenance terminal shall [F151] be contained within a rack or equipment cabinet.

3.3.14.3 [Requirement F152 deleted].

3.3.15 Cabinet or Rack Construction

3.3.15.1 The installation of the CCR and MLC shall [F153] provide a degree of protection to personnel against incidental contact with the equipment. The installation of the CCR and MLC shall [F153.1] provide a degree of protection from falling dirt and dust and against dripping and lightly splashing liquids.

3.3.15.2 The equipment cabinets shall [F154] be constructed so that no fixed part comes loose.

3.3.15.3 The equipment cabinets and frames shall [F155] not exceed a height of 72 inches (1.83 meters), a width of 36 inches (0.91 meters) and a depth of 38 inches (0.97 meters).

3.3.15.4 The loading conditions of each fully equipped cabinet and frame shall [F156] not exceed an average weight distribution of 125 lb/ft2.

3.3.15.5 Removal of equipment or modules or interchanging of equipment modules shall [F157] not cause any deformation to the cabinets and frames.

3.3.15.6 Removable components shall [F158] not exceed the weight limits specified in Paragraph

3.3.6.3 of FAA-G-2100H so as to permit removal and replacement by one person.

3.3.15.7 No MLC or associated equipment cabinet parts, other than small parts or miscellaneous hardware, shall [F159] be mounted 5 ft. above the floor.

12/21/12 17

3.3.15.8 All cabinet wiring shall [F160] be provided with chafing protection in addition to individual wire or cable insulation jackets.

3.3.15.9 Indoor cabinet requiring forced ventilation shall [F161] contain its own low-noise fan blower system and shall [F162] require no external ducts.

3.3.15.10 Ventilation exhaust openings shall [F163] be through the top of the cabinet and shall [F164] direct the exhaust upward and away from personnel and other equipment.

3.3.15.11 Exhaust outlet openings shall [F165] not interfere with or be obstructed by cable routings.

3.3.15.12 The equipment cabinets shall [F166] allow air intake from either below a raised floor or from floor level, by simple removal of cover plates or baffles.

3.3.15.13 Air intakes shall [F167] be provided with uniform air filters in all equipment cabinets.

3.3.15.14 Equipment cabinet filters shall [F168] be replaceable using only common hand tools.

3.3.15.15 Identification of MLC units shall [F169] be in accordance with FAA-G-2100H, Paragraph 3.3.3.

3.3.15.16 The equipment cabinets shall [F170] provide access for interconnecting cables to enter through the top or bottom of the equipment cabinet.

3.3.15.17 Sidewall cabling shall [F171] be allowed only when necessary to meet critical design requirements.

3.3.15.18 All interconnection cables and connectors required for equipment site installation, checkout, acceptance testing, operation and maintenance shall [F172] be compatible with both under floor and overhead distribution and cable facilities provided by the FAA.

3.3.15.19 All such cabling shall [F173] permit accessibility to equipment for site acceptance test, maintenance and replacement.

3.3.15.20 Cabling and wiring shall [F174] comply with 3.3.1.4.10 of FAA-G-2100H; National Electric Code, NFPA-70; and FAA-C-1217E.

3.3.15.21 All interconnecting cables shall [F175] be plenum-rated.

3.3.15.22 All cable connectors making external connections shall [F176] be clearly identified on the plug-in side by labels descriptive of their specific function and by the proper reference designation.

3.3.15.23 The mating connector part (connector or plug) that is electrically energized shall [F177] contain female contacts, unless approved by the FAA.

3.3.15.24 All cable connectors shall [F178] be mechanically retained in place, excluding internal power cables.

3.3.15.25 Connectors shall [F179] comply with paragraph 3.3.1.4.3 of FAA-G-2100H.

12/21/12 18

3.3.15.26 Signal cable end terminations shall [F180] be solder less, quick-disconnect terminal blocks or mass termination connectors.

3.3.15.27 Power cable terminations shall [F181] be screw-type terminal blocks, pressure contact terminal blocks or connectors.

3.3.16 Shelter Equipment

3.3.16.1 Each airfield equipment electrical shelter hosting FLS components shall [F182] be provided with a disconnect switch, a 480 Volt AC input panel, a high voltage output cabinet, a utility transformer, and a distribution panel in accordance with the specifications in the following sections.

3.3.17 Disconnect Switch

3.3.17.1 A three-phase fused disconnect switch shall [F183] be provided for each lighting shelter to interrupt all phases of the primary power to the 480 Volt AC input panel.

3.3.17.2 The three-phase disconnect switch shall [F184] be mechanically ganged so all three blades are simultaneously disconnected with one level motion. The three-phase disconnect switch shall [F184.1] have a NEMA 2 enclosure.

3.3.18 480 Volt AC Input Panel

3.3.18.1 A 480 volt AC input panel shall [F185] be supplied for each lighting shelter.

3.3.18.2 The AC input panel shall [F186] be a NEMA 12 enclosure.

3.3.18.3 The AC input panel shall [F187] be equipped with a lockable door.

3.3.18.4 The AC input panel shall [F188] include a high voltage warning placard as described in section 3.3.22.

3.3.18.5 The AC input panel shall [F189] receive 480 Volts AC, 3-phase, 3-wire, 60 Hz, ungrounded delta, input power.

3.3.18.6 The AC input panel shall [F190] include high voltage safety provisions.

3.3.18.7 The AC input panel shall [F191] provide 480 Volts AC, single phase, 2-wire power to each CCR and utility transformer.

3.3.19 High Voltage Output Cabinet

3.3.19.1 A high voltage output cabinet shall [F192] be supplied for each lighting shelter.

3.3.19.2 The output cabinet shall [F193] be a NEMA 12 enclosure.

3.3.19.3 The output cabinet shall [F194] be equipped with a lockable door.

3.3.19.4 The output cabinet shall [F195] contain 1/4-inch transparent Plexiglas enclosures, or equal, guarding all exposed voltage terminals.

12/21/12 19

3.3.19.5 The output cabinet shall [F196] receive constant current regulated power from each

CCR.

3.3.19.6 The output cabinet shall [F197] provide shorting disconnects for isolation of the field lighting circuit during maintenance.

3.3.19.7 The output cabinet shall [F198] include high voltage safety provisions.

3.3.19.8 The output cabinet shall [F199] include a warning placard as described in section 3.3.22.

3.3.19.9 The output cabinet shall [F200] provide for the distribution and switching of the current from the CCR units to the field lighting circuits.

3.3.20 Utility Transformer

3.3.20.1 A utility transformer shall [F201] be supplied for each lighting shelter.

3.3.20.2 The utility transformer shall [F202] receive 480 V AC, 60 Hz, single phase power from the input panel.

3.3.20.3 The utility transformer shall [F203] provide 120/240V, +/-10 %, 60 Hz to the distribution panel. The utility transformer shall [F203.1] have copper windings in accordance with FAA-C-1217F paragraph 4.15.2. The utility transformer shall [F203.2] have a NEMA 2 enclosure.

3.3.21 Distribution Panel

3.3.21.1 A distribution panel shall [F204] be supplied for each lighting shelter.

3.3.21.2 The distribution panel shall [F205] receive 120/240 V AC, 60 Hz, single phase power from the utility transformer.

3.3.21.3 The distribution panel shall [F206] provide 120/240V, +/-10 %, 60 Hz to the electrical and mechanical equipment in the lighting shelter.

3.3.21.4 The distribution panel shall [F207] be provided with a main power disconnect circuit breaker.

3.3.22 Warning signs

3.3.22.1 All contacts, terminals, and parts having voltages in excess of 500 V (RMS) shall [F208] be clearly marked "DANGER HIGH VOLTAGE".

3.3.22.2 All warning signs shall [F209] be placed as close as possible to the point of danger.

3.3.22.3 All markings shall [F210] have red letters (a minimum of 1/2 inch (12.7 cm) high) on a white or clear background.

12/21/12 20

4. VERIFICATION

The requirements in this specification shall be verified in accordance with this table.

Unique Requirement

Identifier Specification

Paragraph Test, Subtest Test Verification

Method Test

Configuration

F1 3.1.1.1 FDQT T PS

F2 3.1.1.2 FDQT T PS

F3 3.1.2.1 FDQT T PS

F4 3.1.3.1 Review R N/A

F5 3.1.4.1 FDQT D PS

F6 3.1.4.2 Review R N/A F7 3.1.4.3 Review R N/A F8 3.1.4.4 Review R N/A

F9 3.1.4.5 FDQT D PS

F10 3.1.4.6 FDQT D PS

F11 3.1.5.1 Review A N/A

F12 3.1.5.2 FDQT T PS

F13 3.1.5.3 FDQT T PS

F14 3.1.5.4 FDQT T PS

F15 3.1.5.5 FDQT T PS

F16 3.1.5.6 FDQT T PS

F17 3.1.5.7 FDQT T PS

F18 3.1.6.1.1 FDQT T PS

F19 3.1.6.1.2 FDQT D PS

F21 3.1.6.1.4 FDQT D PS

F21.1 3.1.6.1.4 FDQT D PS

F22 3.1.6.2.1 FDQT T PS

F23 3.1.6.2.2 FDQT T PS

F24 3.1.6.2.3 FDQT D PS

F26 3.1.6.2.5 FDQT D PS

F26.1 3.1.6.2.5 FDQT T PS

F27 3.1.6.2.6 FDQT T PS

F28 3.1.6.3 FDQT D PS

F29 3.1.6.4.1 FDQT T PS

F30 3.1.6.5.1 FDQT T PS

F31 3.1.6.6.1 FDQT D PS

F32 3.1.6.6.2 FDQT D PS

F33 3.1.6.6.3 FDQT D PS

F34 3.1.7.1.1 FDQT T PS

F42 3.1.8.3 FDQT T PS

F48 3.1.9.1 FDQT T PS

F48.1 3.1.9.1 FDQT T PS

F48.2 3.1.9.1 FDQT T PS

F49 3.1.9.2 FDQT T PS

F56 3.1.9.9 FDQT D PS

F57 3.1.9.9 Review A N/A

12/21/12 21

Unique Requirement

Identifier Specification

Paragraph Test, Subtest Test Verification

Method Test

Configuration F58 3.1.9.10 Review A N/A F59 3.1.10.1 Review R N/A F60 3.1.10.2 FDQT, Review I, R PS, N/A

F61 3.1.11.1 FDQT T PS

F62 3.1.11.2 FDQT T PS

F63 3.1.11.3 FDQT D PS

F64 3.1.12.1 FDQT T PS

F65 3.1.13.1 FDQT T PS

F66 3.1.14.1 Review R N/A F67 3.1.15.1 Review R N/A

F68 3.2.1.1 FDQT D PS

F69 3.2.1.2 Review R N/A

F70 3.2.1.3 FDQT T PS

F71 3.3.1.1 Review R N/A F72 3.3.2.1 Review R N/A F73 3.3.2.2 Review R N/A F74 3.3.2.3 Review R N/A F75 3.3.3.1 Review R N/A F76 3.3.3.2 Review R N/A F77 3.3.4.1 Review R N/A F78 3.3.4.2 Review R N/A F79 3.3.5.1 Review R N/A F81 3.3.5.3 Review R N/A F82 3.3.6.1 Review R N/A F83 3.3.6.2 Review R N/A

F84 3.3.6.3 FDQT D PS

F85 3.3.6.4 FDQT T PS

F86 3.3.6.5 FDQT T PS

F87 3.3.6.6 FDQT A N/A

F88 3.3.6.7 FDQT D PS

F89 3.3.6.8 Review R N/A F90 3.3.6.9 Review R N/A F91 3.3.6.10 Review R N/A F92 3.3.6.11 Review R N/A F93 3.3.6.12 Review R N/A F94 3.3.6.13 Review R N/A F95 3.3.6.14 Review R N/A F96 3.3.6.15 Review R N/A F97 3.3.6.16 Review R N/A F98 3.3.6.17 Review R N/A F99 3.3.6.17 Review R N/A F100 3.3.6.17 Review R N/A F101 3.3.6.17 Review R N/A F102 3.3.6.18 Review R N/A F103 3.3.6.19 Review R N/A

12/21/12 22

Unique Requirement

Identifier Specification

Paragraph Test, Subtest Test Verification

Method Test

Configuration F104 3.3.6.20 Review R N/A F105 3.3.6.21 Review R N/A F106 3.3.6.22 Review R N/A F107 3.3.6.23 Review R N/A F108 3.3.6.24 Review R N/A F109 3.3.6.25 Review R N/A F110 3.3.6.26 Review R N/A F111 3.3.6.27 Review R N/A F112 3.3.6.28 Review R N/A F113 3.3.6.29 Review R N/A F114 3.3.7.1 Review R N/A F115 3.3.8.1 Review R N/A F116 3.3.8.2 Review R N/A F117 3.3.8.3 Review R N/A F118 3.3.8.4 Review R N/A F119 3.3.8.5 Review R N/A F120 3.3.9.1 Review R N/A F121 3.3.9.2 Review R N/A F122 3.3.9.3 Review R N/A F123 3.3.9.4 Review R N/A F124 3.3.10.1 Review R N/A F125 3.3.10.2 Review R N/A F126 3.3.10.3 Review R N/A F127 3.3.10.4 Review R N/A F128 3.3.10.5 Review R N/A F129 3.3.10.6 Review R N/A F130 3.3.10.7 Review R N/A F131 3.3.10.8 Review R N/A F132 3.3.10.9 Review R N/A F133 3.3.11.1 Review R N/A F134 3.3.11.2 Review R N/A

F135 3.3.12.1 FDQT T PS

F136 3.3.12.2 FDQT T PS

F137 3.3.12.3 FDQT T PS

F138 3.3.12.4 FDQT T PS

F139 3.3.12.5 FDQT T PS

F140 3.3.12.6 Review R N/A F141 3.3.12.7 Review R N/A F142 3.3.13.1 Review R N/A F143 3.3.13.2 Review R N/A F144 3.3.13.3 Review R N/A F145 3.3.13.4 Review R N/A F146 3.3.13.5 Review R N/A F150 3.3.14.1 Review R N/A F151 3.3.14.2 Review R N/A

12/21/12 23

Unique Requirement

Identifier Specification

Paragraph Test, Subtest Test Verification

Method Test

Configuration

F153 3.3.15.1 FDQT I PS

F153.1 3.3.15.1 FDQT I PS

F154 3.3.15.2 Review R N/A F155 3.3.15.3 Review R N/A F156 3.3.15.4 Review R N/A F157 3.3.15.5 Review R N/A F158 3.3.15.6 Review R N/A F159 3.3.15.7 Review R N/A

F160 3.3.15.8 FDQT I PS

F161 3.3.15.9 Review R N/A F162 3.3.15.9 Review R N/A F163 3.3.15.10 Review R N/A F164 3.3.15.10 Review R N/A F165 3.3.15.11 Review R N/A F166 3.3.15.12 Review R N/A F167 3.3.15.13 Review R N/A F168 3.3.15.14 Review R N/A F169 3.3.15.15 FDQT, Review I, R PS, N/A F170 3.3.15.16 Review R N/A F171 3.3.15.17 Review R N/A F172 3.3.15.18 Review R N/A F173 3.3.15.19 Review R N/A F174 3.3.15.20 FDQT, Review I, R PS, N/A F175 3.3.15.21 Review R N/A F176 3.3.15.22 Review R N/A F177 3.3.15.23 Review R N/A F178 3.3.15.24 Review R N/A F179 3.3.15.25 Review R N/A F180 3.3.15.26 Review R N/A F181 3.3.15.27 Review R N/A F182 3.3.16.1 Review R N/A F183 3.3.17.1 Review R N/A F184 3.3.17.2 Review R N/A

F184.1 3.3.17.2 Review R N/A F185 3.3.18.1 Review R N/A F186 3.3.18.2 Review R N/A F187 3.3.18.3 Review R N/A F188 3.3.18.4 Review R N/A F189 3.3.18.5 Review R N/A F190 3.3.18.6 Review R N/A F191 3.3.18.7 Review R N/A F192 3.3.19.1 Review R N/A F193 3.3.19.2 Review R N/A F194 3.3.19.3 Review R N/A F195 3.3.19.4 Review R N/A

12/21/12 24

Unique Requirement

Identifier Specification

Paragraph Test, Subtest Test Verification

Method Test

Configuration F196 3.3.19.5 Review R N/A F197 3.3.19.6 Review R N/A F198 3.3.19.7 Review R N/A F199 3.3.19.8 Review R N/A F200 3.3.19.9 Review R N/A F201 3.3.20.1 Review R N/A F202 3.3.20.2 Review R N/A F203 3.3.20.3 Review R N/A

F203.1 3.3.20.3 Review R N/A F203.2 3.3.20.3 Review R N/A F204 3.3.21.1 Review R N/A F205 3.3.21.2 Review R N/A F206 3.3.21.3 Review R N/A F207 3.3.21.4 Review R N/A F208 3.3.22.1 Review R N/A F209 3.3.22.2 Review R N/A F210 3.3.22.3 Review R N/A

12/21/12 25

5. RESERVED

12/21/12 26

6. NOTES

6.1 Glossary

Alert Generation Time - Alert Generation Time is the interval between occurrence of any FLS component failure that prevents the FLS from performing required operations within the required time interval and the FLS output of the corresponding alert message.

Array – Refers to the physical arrangement of light fixtures that comprise a single unit of RELs and THLs that illuminate and extinguish simultaneously at a runway/taxiway intersection or runway takeoff hold position. This is usually 6 light fixtures per REL and 32 light fixtures for a THL. See also “group”.

ASDE-X System – The Airport Surface Detection Equipment Model X (ASDE-X) is a traffic management system for the airport surface that provides seamless coverage and aircraft identification to air traffic controllers. The system uses a combination of surface movement radar and transponder multilateration sensors to display aircraft position labeled with flight call-signs on an ATC tower display. The integration of these sensors provides data with an accuracy, update rate and reliability suitable for improving airport safety in all weather conditions. Further, the system is architected to support Automatic Dependent Surveillance - Broadcast (ADS-B).

The ASDE-X architecture consists of five core components: multilateration, surface movement radar, ADS-B, multi-sensor data processing, and tower displays.

The ASDE-X System provides a surveillance source needed by the RWSL System in order to properly control the REL and THL fixtures so as to warn pilots directly of unsafe conditions with respect to entering or departing on a runway.

Command Response Time – The command response time is the interval between issuance of a command by the RWSL processor and receipt, by the RWSL processor, of the corresponding (action confirmation) reply from the FLS. Note that the FLS control unit must have completed issuance of all switching and signaling commands to the relevant FLS components, but it need not have received state change confirmation from the components, at the time the reply is sent.

Contractor Acceptance Inspection – A Contractor Acceptance Inspection (CAI) is performed to determine the installed RWSL system meets all contract requirements. At the successful completion of CAI, the government assumes ownership of the system.

Depot Level Maintenance – Depot level maintenance is one of the concepts within the FAA’s Two-Level Maintenance concept. It consists of those maintenance activities that are beyond the capability of the site level technician, including repair of system LRUs if required. Depot level maintenance also includes the complete restoration of associated support and test equipment.

Development Testing – Development Testing (DT) seeks to determine if the system design conforms to all technical and performance requirements specified in the contract. DT normally is performed by the contractor and witnessed by the product team at the factory and/or the William J. Hughes Technical Center (WJHTC). DT typically begins with a series of hardware and software tests. Hardware tests begin at the board level or component level and proceed to the system level. The tests verify achievement of requirements relating to such factors as timing, leakage current, thermal stress, and electromagnetic interference. Software testing begins by

12/21/12 27 verifying the most detailed requirements at the unit level and proceeds to verifying…