Purchase_Description__USN_EXWC-NMRLC_40-Ton_Hydraulic_Sliding_Axle_Trailer_(ATTLA)_formated.docx

PURCHASE DESCRIPTION

TRAILER, COMMERCIAL, 40-TON HYDRAULIC SLIDING AXLE WITH RECOVERY WINCH (ATTLA CERTIFIED) Naval Facilities Engineering and Expeditionary Warfare Center (NAVFAC EXWC) Naval Medical Readiness Logistics Command (NMRLC)/ Seabee Construction Battalion / Naval Expeditionary Logistics Support Group (NAVELSG) Document Identifier: Purchase Description 40 ton, Hydraulic Sliding Axle w/winch ATTLA Certified

Revision: 9/22/2026

SECTION 1: INSTRUCTIONS AND NOTES TO OFFERORS

1.1 Exceptions to Specification

The Offeror shall explicitly and completely identify any and all exceptions taken to the requirements of this specification. Drawings, literature, and any other information submitted with an offer do not constitute a stated or implied exception unless specifically identified in writing as an exception and accepted and implemented by an amendment to the solicitation or modification to the contract. Any exception deemed acceptable by the Government shall apply only to the specific item or requirement cited and shall not extend to any other requirement.

1.2 "Or Equal" Evaluations and Country of Origin Restrictions Brand Name or Equal: An Offeror offering items other than brand name items identified herein, when an "or equal" may be acceptable, shall furnish with their proposal all technical data information, product descriptions, and engineering specifications necessary to ensure that a determination may be made as to the equality of the product offered (reference FAR Clause 52.211-6, "Brand Name or Equal").

Country of Origin Restrictions: All components, assemblies, materials, and hardware furnished under this contract shall comply with the Buy American Act and Trade Agreements Act (TAA).

1.3 Proposal Submittal Requirements

The Offeror shall submit the following items with their proposal:

Letter of Exceptions: A detailed explanation, submitted in a separate letter, of any exceptions to the specification, including alternate equipment proposed or an affirmative declaration of comprehensive understanding with zero exceptions taken.

Line-Item Compliance Matrix: A completed specification compliance sheet indicating an affirmative response of "Comply" or "Not Comply" for each numbered paragraph herein.

Preliminary Engineering Drawings: Detailed drawings showing:

General arrangement and layout views of the proposed 40-ton hydraulic sliding axle trailer, including upper deck, recovery winch, lower tilting deck, approach plate, sliding axle travel, landing gear, and all equipment locations verifying compliance with dimensional envelopes.

Exterior front, rear, curb-side, and street-side elevations with overall dimensions.

Estimated unladen curb weight, payload rating (80,000 lbs distributed / 50,000 lbs concentrated in 12 ft), and Gross Trailer Weight Rating (GVWR).

Quality Assurance Documentation: Documented evidence of established corporate quality assurance procedures and manufacturing quality systems.

Customer and Technical Support Plan: Detailed procedures for customer service, warranty execution, and technical support access via email, telephone, and online portal.

SECTION 2: SCOPE AND APPLICABLE DOCUMENTS

2.1 Scope and Background

Naval Facilities Engineering and Expeditionary Warfare Center (NAVFAC EXWC) in support of the Naval Medical Readiness Logistics Command (NMRLC) has a requirement to procure commercial heavy-duty 40-ton hydraulic sliding axle trailers to replace aging fleet assets. The trailers shall comply at a minimum with Military (MIL), American Welding Society (AWS), and Society of Automotive Engineers (SAE) standards for commercial and tactical transport equipment. Compliance with these standards introduces commonality with other Department of Defense (DoD) and commercial logistics systems, ensuring operational readiness and functional interoperability across austere expeditionary environments.

2.2 Applicable Documents

The following documents of the issue in effect on the date of solicitation form a part of this specification to the extent specified herein:

2.2.1 Federal Standards and Regulations

Code of Federal Regulations (CFR):

49 CFR Part 393 – Parts and Accessories Necessary for Safe Operation (FMCSR) 49 CFR Part 396 – Inspection, Repair, and Maintenance 49 CFR Part 571 – Federal Motor Vehicle Safety Standards (FMVSS)

FMVSS 108 (49 CFR § 571.108): Lamps, Reflective Devices, and Associated Equipment FMVSS 121 (49 CFR § 571.121): Air Brake Systems FMVSS 223 / 224 (49 CFR §§ 571.223, 571.224): Rear Impact Guards

2.2.2 Military and Federal Specifications

MIL-STD-209K: Department of Defense Interface Standard for Lifting and Tie-Down Provisions MIL-STD-1366E: Interface Standard for Transportability Criteria MIL-STD-1791D (Change 1): Department of Defense Interface Standard for Internal Aerial Delivery in Fixed-Wing Aircraft NATO STANAG 4009: Interface Geometry, Tractors and Semi-Trailers Detailing Tow Vehicle/Trailer Interface A-A-50271: Plates, Identification, Marking, and Information NAVFAC P-480 (Appendix F): Management of Civil Engineering Support Equipment (CESE) Data Plates

2.2.3 Society of Automotive Engineers (SAE) Standards

SAE J163: Low Tension Wiring and Cable Terminals and Splice Clips SAE J429: Mechanical and Material Requirements for Externally Threaded Fasteners SAE J551: Measurement of Electromagnetic Radiation from Motor Vehicles and Devices SAE J553: Circuit Breakers SAE J560: Primary and Auxiliary Seven-Conductor Electrical Connector for Truck-Trailer Jumper Cable SAE J561: Electric Terminals – Eyelet and Spade Type SAE J575: Tests for Motor Vehicle Lighting Devices & Components SAE J576: Plastic Materials for Use in Optical Parts Such As Lenses and Reflectors of Motor Vehicle Lighting Devices SAE J578: Color Specification for Electric Signal Lighting Devices SAE J682: Front and Rear Wheel Splash and Stone Throw Protection SAE J1128: Low Tension Primary Cable SAE J1292: Automobile, Truck, Truck-Tractor, Trailer, and Motor Coach Wiring SAE AMS-STD-595A: Colors Used in Government Procurement (Color #34094, Flat Lusterless Olive Drab Green)

2.2.4 Industrial and International Standards

ISO 668: Series 1 Freight Containers – Classification, Dimensions, and Ratings ISO 7241 (Series B): Hydraulic Fluid Power – Dimensions and Requirements of Quick-Action Couplings TMC RP 803: Pre-Service Trailer Inspection, Technology & Maintenance Council, American Trucking Associations ASME Boiler and Pressure Vessel Code: Section IX, Welding and Brazing Qualifications AWS D1.1 / D1.6: Structural Welding Code – Steel / Stainless Steel

2.3 Order of Precedence

In the event of a conflict between the text of this purchase description and the references cited above, the most stringent requirements, as determined by the Government, shall take precedence. Nothing in this purchase description, however, supersedes applicable Federal and State safety laws and regulations.

SECTION 3: TECHNICAL AND CONFIGURATION REQUIREMENTS

3.1 General Configuration and Mission

Vehicle Architecture: Commercial heavy-duty, 40-ton capacity, tandem-axle hydraulic sliding/traveling axle semi-trailer featuring a fixed full-width upper deck, an integrated recovery winch, a tilting lower deck with a low-angle rear approach plate, recessed equipment tie-down rings, an auxiliary diesel pony motor, and Air Transportability Test Loading Agency (ATTLA) certification for USAF C-17 and C-5 aircraft.

Mission Capabilities: Designed to transport, self-load, and recover containerized freight (ISO 668 containers, TRICONs, QUADCONs), breakbulk cargo, wheeled and tracked construction equipment (e.g., skid-steer loaders, generators, mobile light towers, HMMWVs, CUCVs), palletized cargo, and expeditionary logistics modules across highways and secondary austere roadways.

3.2 Capacity and Dimensions

The trailer shall conform to the following capacity and dimensional envelopes:

3.3 Chassis Frame, Upper Deck, and Headache Rack

Main Frame: Heavy-duty structural steel frame engineered to withstand structural bending and torsional loading during axle travel and full-capacity tilt-loading operations.

Upper Deck: Full-width fixed upper deck with a minimum swing clearance radius of 80 inches (NATO STANAG 4009 compliant 90.5-inch swing radius optional per Section 3.12.1).

Headache Rack (Headboard):

Heavy-duty, bolt-on, removable front steel headache rack.

Forklift Pockets: Two (2) integral forklift pockets positioned at the top of the headache rack, spaced 48 inches on-center (approximately 43 inches clear between pockets), measuring 4 inches high × 10 inches wide.

Provisions: Detachable electrical quick-disconnect couplers; integrated lockable chain rack with positive anti-swing keeper; protected white/amber LED work lighting.

Landing Gear: Heavy-duty, two-speed manual landing gear with drop-leg sand shoes; crank handle located on the driver side (street side). Sized to support full loaded capacity without interference with military or commercial prime movers.

Safety Access: Integrated anti-slip footsteps and heavy-duty grab handles installed on both sides of the trailer at the transition between the lower deck and gooseneck.

3.4 Lower Tilting Deck, Approach Plate, and Decking

Tilting Lower Deck: Hydraulically tilted main bed with automatic or gravity-actuated travel locks to rigidly lock the platform during highway transport mode.

Rear Approach Plate: Flat, load-bearing rear approach plate engineered for smooth Roll-on/Roll-off (Ro/Ro) equipment transfer at ground level.

Traction Cleat Bars: Welded 3/4-inch minimum cleat bars/traction aids installed on the outer deck edges starting at least 5 feet forward of the approach plate and across the approach plate itself to prevent tracked equipment slippage.

Decking Construction:

Heavy-duty Apitong hardwood, steel, or composite decking (1-3/4 inch Rumber or equivalent), butted tight with proper cross-member spacing to eliminate deflection under heavy concentrated wheel loads.

Upper gooseneck deck finished with diamond tread plate or punched steel grip plate.

Perforation Rule: If punched steel grip plate is utilized, perforations shall not be placed directly over frame members or cross sills; openings must remain clear to allow mud, ice, and debris to self-clear.

All decking materials shall be impervious to fluids, diesel fuel, mud, hydraulic oil, and UV degradation.

Recessed Center D-Ring: Heavy-duty recessed equipment tie-down D-ring located along the center rear of the main deck just forward of the approach plate.

3.5 Hydraulic Recovery Winch System

Winch Architecture: Heavy-duty planetary gear-driven hydraulic recovery winch mounted at the front center of the upper deck above the kingpin area.

Rated Line Pull: 20,000 lbs minimum bare-drum rated pulling capacity, permanently marked with its Safe Working Load (SWL).

Winch Cable: 100 feet minimum of 9/16-inch high-strength steel wire rope fitted with a heavy-duty swivel safety latch hook. The wire rope shall be delivered with mill test certificates and physical certification tags attached.

Controls & Free-Spool:

Air-shift free-spool clutch control.

Primary proportional hydraulic control levers located in a protected, illuminated enclosure on the driver side for nighttime operations.

Heavy-duty industrial wander-lead wired remote control (wireless remote control furnished in addition to the wired remote).

Cable Protection System: Winch safety drum guard; heavy-duty roller fairlead mounted on the upper deck; replaceable upper deck skid plate; and a heavy-duty steel roller centered at the front of the mainframe to prevent cable chafing.

3.6 Auxiliary Power Unit (Diesel Pony Motor) and Hydraulics

Pony Motor: Heavy-duty commercial industrial diesel engine (compatible with JP-8, F-24, and high-sulfur diesel fuel) enclosed in a lockable, hinged steel housing mounted at the front/top of the gooseneck.

360-degree service accessibility for routine maintenance, oil drain plugs, and filter replacement.

Heavy-duty ignition switch with key retention tether to prevent loss.

Heavy-duty steel battery box with bottom drainage weep holes.

Hydraulic Wet Line System:

Dual-line commercial quick-disconnect couplers (ISO 7241 Series B, 3/4-inch 14 NPTF, 60 Series) with female coupler on the trailer supply line (pressure) and male nipple on the trailer return line, fitted with chained protective dust caps.

Priority flow control valve and pressure relief bypass regulating flow between prime mover and trailer.

Automatic diverter valve providing seamless switching between tractor PTO wet line supply and auxiliary pony motor operation.

Standard hydraulic fluid: MIL-PRF-2104J (OE/HDO-10) 10W engine-grade hydraulic oil.

3.7 Running Gear, Suspension, Axles, and Brakes

Axles & Traveling Mechanism: Tandem heavy-duty dual-wheel axles mounted to a heavy-duty hydraulic traveling carriage (sliding subframe) providing continuous travel under full load.

Suspension: Heavy-duty air-ride suspension rated at 25,000 lbs nominal per axle, equipped with automatic ride-height control and an automatic air-ride dump valve.

Hubs & Odometer: Hub-piloted wheel assemblies with outboard brake drums; oil-bath wheel hubs with transparent sight glasses; mechanical (analog) hub-odometer mounted on the street-side front axle hub (digital odometers prohibited).

Braking System: Commercial-standard 4S/2M Anti-Lock Braking System (ABS) conforming to FMVSS 121.

ABS diagnostic status lamp mounted on the driver-side rear frame.

Automatic slack adjusters on all wheel ends.

Manual air tank drain valves easily accessible from the side or rear.

Tires: First-line, tubeless, commercial highway steel-belted radial tires rated for full axle capacity. Matching brand, model, and size across all positions; manufacturing date within one (1) year of equipment delivery (Double Coin or unapproved budget brands prohibited).

Wheels: Solid steel single-piece disc wheels with standard hub-piloted lug pattern (super singles prohibited). Primed and finished in durable flat lusterless green #34094 or matte black.

Spare Tire Assembly: One (1) matching spare tire and wheel assembly mounted on the trailer in an accessible bracket approved by NAVFAC EXWC that does not interfere with tractor swing envelopes, winch operation, or cargo loading.

3.8 Electrical System and Lighting

Multi-Voltage Compatibility: 6–28V DC multi-voltage commercial sealed LED lighting system conforming to FMVSS 108.

Intravehicular Connectors:

Standard 12-pin NATO male intravehicular connector (24V connection).

Standard 7-way commercial male intravehicular connector (12V connection).

Specialized Deck & Work Lighting:

Upper Deck: White LED work floodlight mounted inside the top beam of the headache rack; white LED work light centered at the rear of the gooseneck under the transition roller.

Lower Deck: Flush-mounted, recessed clear LED load lights installed along the inside edge of the lower deck outer side rails and into the approach ramp, protected by heavy-duty steel mesh grates.

Safety Marker Lights: Swing-out safety marker extension brackets (amber forward, red rearward) with positive locking pins for wide-load visibility.

Switches: Independent manual waterproof on/off switches for headache rack, winch, and side load lights located on the driver side.

Wiring Integrity: Sealed, modular wiring harnesses routed through protective jackets and rubber grommets, secured with heavy-duty bolted steel clamps. Zip ties to secure wiring to the frame are strictly prohibited.

3.9 Cargo Restraint and Auxiliary Equipment

Tie-Down D-Rings: Six (6) heavy-duty forged D-rings per side (10,000 lbs WLL each) welded along outer frame rails.

Chain Slots: Chain/key slots on main beams, sides, and rear to complement outer chain key slots.

Toolboxes: Two (2) lockable heavy-duty steel toolboxes with bottom drainage weep holes, flush hinges, and two (2) keys per box.

Collateral Equipment: Onboard tool package (lug wrench, breaker bar, wheel chocks, caution flags, and adapters) crated and banded with an inventory checklist prior to delivery.

SECTION 4: PERFORMANCE AND OPERATIONAL REQUIREMENTS

4.1 Environmental Envelope and Terrain Operation

Roadway Operation: Fully operable on paved highways, secondary graded roads, gravel, cobblestone, and unimproved rough operational surfaces.

Speed Rating: Capable of sustained highway operation at 65 mph (conforming to state/federal bridge and speed regulations) and off-road operational speeds up to 10 mph.

Climatic Envelope: Full operational readiness across ambient temperatures ranging from -25°F to 130°F (-31.7°C to 54.4°C).

Ground Clearance: Adequate loaded ground clearance to prevent frame or axle high-centering during transit across rough, unimproved operational sites.

Structural Welding: All structural welding shall conform to ASME Section IX and AWS D1.1/D1.6. Welds shall be uniform, fully penetrated, and free from cracks, voids, porosity, undercut, and excess splatter.

SECTION 5: COATINGS, FINISH, AND CORROSION CONTROL

5.1 Surface Preparation

All chassis steel, frame members, headache rack, and suspension weldments shall be thoroughly degreased and blast-cleaned to remove dirt, grease, oil, moisture, scale, rust, and weld slag prior to coating application.

5.2 Paint System Architecture

Primer / Base: Two-part corrosion-resistant epoxy primer or zinc-rich primer applied to a minimum Dry Film Thickness (DFT) of 4.0 mils.

Topcoat: Polyurethane corrosion-resistant topcoat applied to a minimum DFT of 4.0 mils.

Color: Flat Lusterless Olive Drab Green (#34094) per SAE AMS-STD-595A (matte, no gloss).

Total Thickness: Combined primer and topcoat system shall be not less than 8.0 mils minimum DFT.

Underbody Corrosion Protection: Petroleum-base or polyurea/polyurethane undercoating (Tectyl, Line-X, or approved equivalent) spray-applied evenly to all lower chassis steel, undercarriage surfaces, and wash-down zones (slide rails and lube points masked).

Non-Skid Surfaces: Heavy-duty broadcast non-skid grit coating applied to all horizontal frame walkways, gooseneck surfaces, and upper deck walking areas.

SECTION 6: MARKINGS, IDENTIFICATION, AND DATA PLATES

6.1 Standardized Stencil & Marking Schedule

Markings shall be applied in matte black stencil paint or permanent laser-engraved metal plates as approved by the Government:

[ FIGURE 1 ]

| U.S. NAVY 97-52919 |

Figure 1: Gooseneck / Side Frame Registration Stencil Detail

[ FIGURE 2 ]

| [ U.S. NAVY ] [ LIGHTS / AIR RECEPTACLES ] [ 97-52915 ] |

| (O) (O) (O) --------------------------------------- (O) (O) (O) | Figure 2: Rear Frame Split Registration Stencil Layout

[ FIGURE 3 ]

| [ TIE DOWN ] [ TP - 125 ] |

| ( O ) ( O ) | | Tandem Wheel Positions | Figure 3: Side Frame Tire Pressure Stencil Detail

[ FIGURE 4 ]

| | [ LIFT HERE ] | |

| | ( O ) | |

| | [ TIE DOWN ] | |

Figure 4: Recessed Upper Deck Lift and Tie-Down D-Ring

[ FIGURE 5 ]

| [ TIE DOWN ] |

Figure 5: Under-Chassis Flange Tie-Down Pocket Detail

6.2 Data Plates

All shipping, transportation, and instruction plates shall be stamped or etched non-ferrous metal securely riveted to the trailer frame in accordance with A-A-50271 and NAVFAC P-480 Appendix F:

Nomenclature: TRAILER, COMMERCIAL, 40-TON HYDRAULIC TRAVELING AXLE Manufacturer Name, Make, Model, and Serial Number / VIN National Stock Number (NSN) and U.S. Navy Registration Number (USN) Unladen Vehicle Curb Weight (lbs / kg) Maximum Rated Payload: 80,000 lbs (distributed) / 50,000 lbs (concentrated 12 ft) Gross Vehicle Weight Rating (GVWR) Date of Delivery (blank until final DD Form 250 acceptance) Contracting Agency: GSA / NAVFAC EXWC Contract Number Warranty Period: 60 Months Bumper-to-Bumper

6.3 GSA Form 1398

The contractor shall affix one (1) copy of GSA Form 1398 (GSA Purchased Trailer) upon final Government inspection.

SECTION 7: TRANSPORTABILITY, AIR CERTIFICATION (ATTLA), AND LIFTING/TIE-DOWN

7.1 Air Transportability and ATTLA Certification

ATTLA Air Transportability Certification

1. Purpose and Scope This procedural workflow establishes the end-to-end operational and engineering sequence required to achieve United States Air Force (USAF) Fixed-Wing Air Transportability Certification for military equipment and ground vehicles.

Certification applies to transport on the following strategic and tactical airlift platforms:

Lockheed Martin C-130 Hercules / Super Hercules (C-130E, C-130H, C-130J) Boeing C-17 Globemaster III Lockheed C-5 Galaxy / C-5M Super Galaxy

2. Governing Standards and Policy References All submissions, structural assessments, and interface testing must adhere to the following Department of Defense (DoD) directives and military standards:

DODI 4540.07 CHG-3: Operation of the DoD Engineering for Transportability and Deployability Program MIL-STD-1366E: Interface Standard for Transportability Criteria MIL-STD-1791D CHG-1: Designing for Internal Aerial Delivery in Fixed Wing Aircraft (Specifically Section 5.3.3.2 and Paragraph 6.4) MIL-STD-209K: Interface Standard for Lifting and Tiedown Provisions

3. Stakeholder Roles and Responsibilities (RACI Matrix)

4. End-to-End Procedural Workflow [Phase 1: Contract Award & Project Initiation] (Within 10 Days Post-Award) [Phase 2: In-Production Collaboration & Technical Checks] [Phase 3: Final Technical Data Package (TDP) Assembly] [Phase 4: ATTLA Engineering Evaluation & Review] (Within 60 Days) (Deficiencies Found) (Package Approved) [Corrective Action / RFI] [ATTLA Certification Memo Issued] [Phase 5: IOA Verification & Delivery] [SDDCTEA / Pull Test] (Only if required)

Phase 1: Contract Award and Project Initiation [Contract Awarded: GSA/DLA] ──> [Distribute MVDO/Contract] ──> [Sponsor Letter Sent within 10 Days] ──> [ATTLA Opens Project] Award Notification & Documentation:

The Acquisition Source (GSA, DLA, or other agency) notifies the purchasing customer / Government Agency Sponsor of the contract award.

Acquisition Source transmits the award order/contract, including:

Order or contract number (inclusive of all exercised options).

Copy of the Motor Vehicle Delivery Order (MVDO), as applicable.

Purchasing Customer / Sponsor contact info (name, phone, email).

Awarded OEM Vendor / Contractor contact info (name, phone, email).

Sponsor Letter Submission (Deadline: 10 Working Days Post-Award):

The Government Agency Sponsor acts as the official liaison and submits an initial request letter via email to ATTLA (ATTLA@us.af.mil) at Wright-Patterson AFB to open an active project case file.

Mandatory Project Reference Data:

Item Nomenclature / Product Description (e.g., Truck Tractor 20T, Trailer Lowbed HYD RGN 60T).

Acquisition Order / Contract Number and option details.

Copy of the MVDO (if applicable).

Government Sponsor contact information.

OEM Vendor primary point of contact.

Vendor Kick-Off Guidance:

Sponsor delivers the official ATTLA compliance checklist and the Technical Data Package template to the OEM vendor.

ATTLA acknowledges project opening and confirms the aircraft airframes targeted for certification (, , ).

Phase 2: In-Production Collaboration and Technical Checks Throughout manufacturing, the Government Sponsor and OEM collaborate to evaluate Work-in-Progress (WIP), Finite Element Analysis (FEA), 3-view CAD drawings, and prototype fitment.

Critical Geometry & Engineering Verification Checklist The OEM and Sponsor must verify the following parameters against the ATTLA Universal Data Spreadsheet:

☐ Approach Angle: Front clearance angle during aircraft ramp transition.

☐ Ramp Breakover Angle: Underside ground clearance over aircraft ramp crest.

☐ Departure Angle: Rear clearance angle during transition off loading ramps.

☐ Maximum Height Profile: Height, longitudinal station, and identity of the highest physical projection.

☐ Significant Projections: Dimensional coordinates of mirrors, exhaust stacks, winches, pintles, or brush guards.

☐ Individual Axle Curb Weights: Unloaded scale curb weight measured per axle.

☐ Wheelbase & Overhang: Centerline wheelbases, front overhang, and rear overhang dimensions.

☐ Rear Suspension Articulation: Unloaded vertical axle articulation travel under curb weight.

☐ Rear Axle Spacing: Longitudinal distance between multi-axle / tandem / tridem clusters.

☐ Axle & Suspension Structural Margin ():

Verify front axle rating vs. .

Verify rear axle rating vs. .

Verify front suspension rating vs. .

Verify rear suspension rating vs. .

☐ Driveline Integrity on Axle Stop Removal: If axle bump stops must be removed for aircraft crest clearance, verify the driveline remains fully intact, seated, and operational without binding across maximum ramp angles.

☐ Tiedown Provision Geometry & Ratings: Verify provision configuration, directional pull envelope, and structural attachment conform to MIL-STD-1791D (Para 5.3.3.2) and MIL-STD-209K.

Design Interchanges: ATTLA engineers may offer virtual technical assistance (via Microsoft Teams or VTC at no charge) during product development upon sponsor request. On-site ATTLA engineering participation requires travel funding from the requesting procurement office.

Phase 3: Technical Data Package (TDP) Assembly and Submission Upon physical completion of the first production unit, the OEM contractor submits the completed TDP directly to the Government Sponsor's designated mailing address.

Mandatory TDP Elements (per MIL-STD-1791D Para 6.4) ATTLA Universal Data Spreadsheet: Fully populated tabs matching equipment type, using standard naming syntax (e.g., Truck Stake 2-Door 20 Foot Bed 30T).

Dimensional & Visual Data: 3-view dimensioned CAD drawings, high-resolution annotated photographs, and physical envelopes.

Structural Substantiation & Load Calculations:

Complete calculation package detailing engineering assumptions, material specifications, and force balance diagrams.

Structural proof showing compliance of cargo and equipment tiedown provisions under maximum dynamic g-loading.

Proposed Tiedown Pattern: Detailed restraint scheme illustrating chain angle configurations for each cargo aircraft type.

Data Plate Verification: Photographic evidence of a permanent design data plate affixed to the vehicle/trailer indicating certified lifting and tiedown ratings (MIL-STD-209K).

Package Vetting and Forwarding Sponsor receives OEM data package and verifies complete documentation.

Sponsor conducts quality audit to ensure all technical fields, drawings, and calculations are present.

Sponsor officially submits the vetted TDP to ATTLA (ATTLA@us.af.mil) on behalf of the contractor.

Phase 4: ATTLA Review, Analysis, and Certification [Complete TDP Submitted] ──> [ATTLA Technical Analysis] ──> [Resolve Inquiries/RFI] ──> [Approval Memo: <= 60 Days] Analytical Review:

ATTLA performs a detailed engineering analysis of vehicle geometry, axle loading, floor contact pressure, aircraft interior clearance envelopes, and tiedown restraints at no charge to the federal sponsor.

Actual and estimated weights are evaluated against MIL-STD-1791D criteria.

Deficiency Resolution (If Applicable):

If requirements are unmet or data is incomplete, ATTLA provides written notice of rejection with specific remediation instructions.

Sponsor coordinates with OEM to execute design revisions, update calculations, or revise loading procedures.

Certification Memo Issuance:

Once all compliance criteria are met, ATTLA issues the official Air Transportability Certification Memo within 60 calendar days of receiving an acceptable, complete technical package.

The memo defines all approved airframes, flight configurations, shoring requirements, and tiedown schemes.

Phase 5: Post-Certification Verification, Delivery, and Closeout Factory Acceptance Inspection & Scale Weighing:

Contractor furnishes the ATTLA Certification Memo to the GSA Industrial Operations Analyst (IOA).

Contractor provides a certified commercial scale weight ticket showing individual curb weights for all axles on the completed build.

GSA IOA Verification Rule:

The GSA IOA inspects the equipment to verify physical conformance with the certification memo.

The IOA verifies that loaded axle weights do not exceed 80% of rated capacity:

Distribution of Certification:

Contractor supplies the approved ATTLA certification memo with the first production unit.

Sponsor forwards copies of the final certification to Naval Facilities Engineering and Expeditionary Warfare Center (NAVFAC EXWC) branches (EX2, EX4, and/or EX5 as applicable).

Copy retained in project historical files.

5. Non-Standard Workflows A. Delivered / Fielded Assets Lacking ATTLA Certification When equipment or ground vehicles have already been delivered without an Air Certification Memo, the following remediation procedure is enforced:

[Uncertified Asset Discovered] [Sponsor & Acquisition Source Direct OEM] [Option A: Retrieve Asset] [Option B: Local Facility] (OEM retrieves asset back to factory) (OEM arranges certified local retrofit) [OEM Executes Modifications] [Sponsor Audits Changes] [Submit Retrofit TDP to ATTLA] [ATTLA Issues Certification] Direction to OEM: The Government Sponsor, through the Acquisition Source (GSA/DLA), issues formal direction to the OEM to correct the deficiency via either:

Physical retrieval of the delivered vehicle back to the manufacturing plant; or Contracting and overseeing an authorized local repair facility to perform required retrofits.

Modification Completion & Notice: OEM advises the Sponsor in writing once modifications are complete.

Resubmission: Sponsor inspects physical modifications, updates the TDP, and submits the package to ATTLA for formal evaluation and certification memo issuance.

B. Special Assessment: Physical Test Loading and SDDCTEA Pull Testing

1. Physical Flight Test Loading (Uncertain Transportability) Applied when computational engineering analysis cannot conclusively establish loading clearances or structural margins.

Test loadings are scheduled as Special Airlift or Transport Missions (SAAM) requiring a formal test report.

Funding & Coordination: The purchasing customer / Government Agency Sponsor is responsible for formally requesting the test load mission and covering all associated airlift and personnel costs.

2. SDDCTEA Structural Analysis & Testing (MIL-STD-209K) Lead Time: OEM must supply provision dimensional data, material specifications, and structural finite element results to SDDCTEA at least 90 days prior to scheduled physical provision testing.

Objective: Upfront analytical modeling reduces destructive testing risks and may eliminate the requirement for physical pull testing if margins are sufficient.

Agency Coordination:

Surface Deployment and Distribution Command Transportation Engineering Agency (SDDCTEA), Newport News, VA (Phone: (757) 599-1113, Email: dpemail@tea.army.mil).

Aberdeen Test Center (ATC) for physical testing services.

6. Vehicle Configuration Reduction Criteria (1 Man-Hour Rule) If an equipment item must be reduced in size or height to fit cargo door envelopes:

Tool & Time Thresholds:

Mechanically attached (non-welded, non-riveted) components may be removed or relocated using standard hand tools.

Total removal, relocation, and tiedown time must not exceed 1 man-hour.

Reassembly time back to fully operational configuration must not exceed 1 man-hour.

Operational Constraints:

Self-Mobility: Vehicle self-mobility must remain intact in its reduced configuration (must be capable of driving on and off aircraft).

Stowage: Dedicated onboard tiedowns and stowage brackets for removed components must be integrated on the vehicle.

Shoring: The vehicle must load without auxiliary wood shoring unless structurally unavoidable.

Delivery State: The vehicle must never be delivered to the Government end-user in its reduced configuration.

7. Directory of Agency Contacts and Resources

Email: ATTLA@us.af.mil USAF Fixed-Wing Aircraft Air Transportability Evaluations & Certification

Phone: (757) 599-1113 Email: dpemail@tea.army.mil Surface Transportability, Rail Certification, and Provision Design Review

Aircraft Compatibility: The trailer shall be certified for internal aerial delivery on USAF C-17 and C-5 transport aircraft in accordance with MIL-STD-1791D (Change 1) and MIL-STD-1366E. Transportability evaluation shall be based on maximum unladen curb weight.

ATTLA Certification Process:

Project Initiation: The Government sponsor will submit a formal sponsor request to the Air Transportability Test Loading Agency (ATTLA) at Wright-Patterson AFB within 10 days of contract award.

Data Package Submittal: The contractor shall submit the complete technical data package (Universal Data Spreadsheet, 3-view drawings, structural analysis, tiedown patterns, and certified axle load calculations) within 90 days ARO directly to ATTLA (ATTLA@wpafb.af.mil) and SDDCTEA (dpemail@tea.army.mil).

80% Axle Loading Verification: The contractor shall present a certified weight ticket of the completed trailer; actual loaded axle weights shall be verified to be equal to or less than 80% of rated capacity per ATTLA guidelines.

Memo Delivery: The contractor shall supply the approved ATTLA Transportability Certification Memo to the Government within 120 days ARO. Final equipment acceptance will not be granted until the ATTLA approval memo is delivered.

Dimensional and Articulation Checks: The contractor shall verify:

Angle of approach, ramp breakover angle, and angle of departure.

Maximum height, longitudinal center of gravity, and extreme projections.

Unladen axle weights, wheelbase, front/rear overhangs, and rear axle articulation.

Reduced Configuration: Removal of mechanically attached components with common hand tools (requiring not more than 1 man-hour total) to achieve transport envelopes shall be permissible. Self-mobility and structural integrity shall not be degraded.

7.2 Lifting and Tie-Down Provisions

Tie-Down Provisions: Heavy-duty tie-down D-rings rated for full load capacity configured for highway, marine, and rail restraint per MIL-STD-209K and MIL-STD-1791D. Raised capacity ratings cast directly into D-ring bodies facing outward.

Lifting Provisions: Four-point lifting provisions engineered to permit crane sling lifting of the unladen trailer without a spreader bar in accordance with MIL-STD-209K. Design loads based on unladen Gross Vehicle Weight.

Structural Analysis: The contractor shall perform finite element analysis (FEA) or engineering calculations validating provision strength to the Government at least 90 days prior to testing.

Shipping Data Plate: An etched metal shipping plate showing lifting diagrams, sling cable lengths, maximum sling capacities, and center-of-gravity location shall be permanently mounted to the frame.

SECTION 8: QUALITY ASSURANCE, VERIFICATION, AND DELIVERY

8.1 Verification Milestones and Test Methods

Compliance shall be verified according to the following matrix:

8.2 Testing and Acceptance

Certified Scale Weighing: Every completed trailer shall be weighed on a certified scale to record unladen curb weight and empty axle weight distribution.

Pre-Service Inspection: Offeror shall perform a comprehensive pre-service inspection in accordance with TMC RP 803, with completed inspection records stowed in the trailer document holder.

Vocational & Functional Testing: Full operational demonstration of the tilting main deck, sliding axle travel carriage, 20,000-lb recovery winch (free-spool, pull, and braking), diesel pony motor, hydraulic diverter circuits, and multi-voltage electrical lighting.

8.3 Technical Manuals and Publications

Manual Delivery Schedule:

30–45 Days ARO: One (1) complete Standard COTS Product Manual set with parts lists for preliminary support development.

150–180 Days ARO: One (1) complete set of Draft Technical Manuals (searchable PDF with editing capability on CD or secure web access) submitted to NAVFAC EXWC for formal review.

Prior to GSA Acceptance at Origin: One (1) final smooth digital manual set submitted to the Ground Vehicles Program.

Delivered with Each Trailer: One (1) complete set of bound manuals (or heavy-duty binders) plus digital copies delivered inside weatherproof storage on the trailer.

Content: Operator Manual, Service Maintenance Manual (preventive maintenance through overhaul), and Illustrated Parts Breakdown (IPB) with exploded component views, original manufacturer part numbers, and CAGE codes.

Line Setting Ticket: Build sheet listing trailer VIN, component serial numbers, tire brands/DOT codes, and UID tag data shipped with each unit.

Manual Delivery Address:

Naval Facilities Engineering and Expeditionary Warfare Center (NAVFAC EXWC) Attn: Ground Vehicles (ExPO EX222) 1000 23rd Avenue, Bldg. 1100, Port Hueneme, CA 93043

8.4 Initial Equipment Training (Williamsburg, VA)

The OEM shall provide live operator and maintainer training for up to fifteen (15) students (plus 6–8 auditing personnel) at the Government facility in Williamsburg, VA:

Two (2) separate 2-day training sessions held within 30 days ARO.

0.5 day classroom theory and technical manual review; 1.5 days hands-on field operation, winch rigging, sliding axle maintenance, and troubleshooting.

Training materials (MS Word / PowerPoint) submitted to the Government 45 days prior to instruction for review and approval.

8.5 Comprehensive Warranty

The contractor shall provide a comprehensive 60-month (5-year) bumper-to-bumper warranty starting on the date of final Government acceptance (DD Form 250).

Commercial and third-party warranties (chassis frame, tilt cylinders, sliding carriage, suspension, winch, and diesel pony motor) shall be integrated into the single 60-month coverage term.

Initial warranty response from the OEM or certified dealer within three (3) business days; 24/7 technical support hotline.

Authorized service location provided within the Continental United States (CONUS).

Contractor covers 100% of parts, labor, and domestic expedited freight costs.

8.6 Delivery Locations and Staging

Trailers shall be delivered FOB Destination in accordance with the GSA Motor Trailer Delivery Order:

Primary Delivery Address: To be provided upon award

Delivery Coordination Point of Contact:

NAVFAC Engineering and Expeditionary Warfare Center (NFEXWC) 1000 23rd Ave, Bldg. 1100, Port Hueneme, CA 93043 Attn: Sean Nelson (EX223) | Email: sean.r.nelson1.ctr@us.navy.mil Stacking and Unstacking: The contractor may stack trailers (wheels down only) for transit; however, the contractor shall be solely responsible for offloading and presenting trailers unstacked with wheels on the ground for destination inspection.

Delivery Hours: Monday through Thursday, 0800 to 1430 local time (no deliveries on Fridays, weekends, or Federal holidays).

Base Security Notice: Delivery drivers must coordinate physical arrival at least 30 days in advance. Drivers must present valid REAL ID, TWIC, or Veterans ID credentials; commercial licenses marked "NOT FOR FEDERAL IDENTIFICATION" will be refused entry. Drivers must present valid proof of vehicle insurance.