Purchase _Description__USN_EXWC_60-Ton_Lowbed_Trailer_formated.docx

PURCHASE DESCRIPTION

60-TON LOWBED HYDRAULIC REMOVABLE GOOSENECK (RGN) TRAILER

Naval Facilities Engineering and Expeditionary Warfare Center (NAVFAC EXWC) Document Identifier: 60-TON LOWBED HYDRAULIC REMOVABLE GOOSENECK (RGN) TRAILER

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 a contract. Any exception deemed acceptable by the Government shall only apply to the specific item or requirement cited and shall not extend to any other requirement.

1.2 "Or Equal" Evaluations 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, product descriptions, and 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").

1.3 Proposal Submittal Requirements

The following items shall be submitted with the offer:

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.

Preliminary Engineering Drawings: Detailed drawings showing:

Layout views of the proposed trailer, including all equipment locations and basic dimensions verifying compliance with the requirements herein.

Exterior front, rear, and side elevations with overall dimensions.

Estimated curb weight and Gross Trailer Weight Rating (GVWR) / Gross Axle Weight Rating (GAWR).

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

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

SECTION 2: SCOPE AND APPLICABLE DOCUMENTS

2.1 Scope and Background

NAVFAC EXWC requires replacement of an aging trailer fleet based on current mission and support requirements. This specification establishes documented requirements to address shortcomings of the current fleet that at a minimum comply with Military (MIL), American Welding Society (AWS), and Society of Automotive Engineers (SAE) standards for tactical and commercial trailers. Compliance to these government and non-government standards introduces commonality with other military, Department of Defense (DoD), and civilian trailers, allowing fleet and joint operations to utilize capabilities to their fullest. The trailers will support operational readiness and functionality in austere conditions.

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 Codes

Code of Federal Regulations (CFR):

49 CFR Part 393 – Federal Motor Carrier Safety Regulations (FMCSR) 49 CFR Part 571 – Federal Motor Vehicle Safety Standards (FMVSS) Note: DOT publications are available from the Superintendent of Documents, U.S. Government Publishing Office, Washington, D.C. 20402 or online at www.access.gpo.gov.

Department of Defense Standards:

MIL-STD-209K: Interface Standard for Lifting and Tie-Down Provisions MIL-STD-1366E: Interface Standard for Transportability Criteria Department of Defense Standards (cont):

MIL-STD-1791D (Change 1): Department of Defense Interface Standard for Internal Aerial Delivery in Fixed Wing Aircraft DODI 4540.07 (Change 3): Operation of the DoD Engineering for Transportability and Deployability Program MIL-PRF-2104J: Lubricating Oil, Internal Combustion Engine, Tactical Service

2.2.2 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 Note: SAE publications may be obtained from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096.

2.2.3 International and NATO Standards

ISO 668: Series 1 Freight Containers – Classification, Dimensions and Ratings (www.iso.org) ISO 7241 Series B: Hydraulic Fluid Power – Dimensions and Requirements of Quick-Action Couplings NATO STANAG 4009: Interface Geometry, Tractors and Semi-Trailers Detailing the Tow Vehicle/Trailer Interface (https://nso.nato.int)

2.2.4 Industry Standards and Recommendations

TMC RP 803: Pre-Service Trailer Inspection, Technology & Maintenance Council, American Trucking Associations (https://tmcconnect.trucking.org) ASME Section IX: Welding, Brazing, and Fusing Qualifications AWS Structural Welding Codes: D1.1 (Steel) and D1.6 (Stainless Steel) ASTM B117 / ASTM D1654: Operating Salt Spray Apparatus and Evaluation of Painted Specimens ASTM D3170: Standard Test Method for Chipping Resistance of Coatings

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 govern. Nothing in this purchase description, however, supersedes applicable Federal and State safety laws and regulations.

SECTION 3: TECHNICAL AND CONFIGURATION REQUIREMENTS

3.1 General Requirements

Material Quality: Materials shall be as specified herein. When materials are not specified, the trailer and all parts thereof shall be furnished to provide the intended function, durability, safety, and maintain good long-term appearance. All materials shall be new, commercial-grade, and free of defects in material and workmanship that may affect performance, function, durability, serviceability, or appearance. The Government reserves the right to make the final determination of the suitability of all components and their layout.

Safety & Operation: All items shall be of high quality and in safe operating condition. All safety devices shall be fully functional, including manual and automatic emergency shut-off devices. All safety guards, warning labels, and safety-related instruction labels shall be permanently affixed.

3.2 Configuration and Dimensions

General Configuration: Trailer shall be rated 60 Tons, lowbed, drop deck, tri-axle, with Hydraulic Removable Gooseneck (RGN). Designed to transport regular, tracked, and oversized construction equipment, attachments, palletized cargo, and breakbulk supplies.

Payload Capacity:

Distributed Load: 120,000 lbs minimum evenly distributed across the main deck.

Concentrated Load: 120,000 lbs or greater concentrated within 16 feet or less across the load space.

Overall Dimensions:

Overall Length: Not to exceed 53 feet (636 inches).

Overall Width: Not to exceed 8.5 feet (102 inches), excluding outriggers.

Loaded Ground Clearance: Minimum 6.0 inches under full rated payload.

3.3 Main Deck and Outriggers

Deck Construction: Heavy-duty steel structural members surfaced with composite decking (Rumber or approved equal) impervious to fuels, oils, solvents, UV rays, mud, and insects. Crossmember spacing shall guarantee zero surface deviation under maximum load.

Fasteners: Fasteners shall be installed without drill-through into crossmember flanges that could weaken structural members.

Front Loading Ramps: Fixed front ramps equipped with a minimum of 3/4-inch welded cleat bars/traction aids and bottom weep holes for drainage.

Outriggers: Removable heavy-duty full-length swinging outriggers. Pin-on front box outriggers with positive lockout mechanism.

Outrigger Hardwood Planks: Planks capable of expanding overall deck width to a minimum of 10.5 feet (126 inches). Planks secured using spring-actuated flat steel plate clamps. Centerline deck storage provided for all outrigger lumber.

3.4 Hydraulic Removable Gooseneck (RGN)

Coupling Mechanism: Full hydraulic detachable gooseneck with automatic positive lock or safety pawl.

Kingpin Swing Clearances:

Standard Swing Radius: 84 inches minimum.

Optional Swing Radius (NATO STANAG 4009): 90.5 inches minimum when ordered.

Ride Height Adjustment: Five (5) to seven (7) position variable ride height adjustment lever/controls maintaining a minimum 6-inch ground clearance when towed.

Hydraulic Controls: Driver-side hydraulic levers clearly marked with operational instructions. Metal data plate mounted above levers specifying lift functions, and a separate data plate mounted below specifying downward controls.

3.5 Auxiliary Power Unit (Pony Motor) and Hydraulic System

Engine Type: Diesel engine compatible with JP-8, F-24, and high-sulfur diesel fuels.

Protection and Enclosure: Protected within an enclosure centered in the gooseneck structure, shielded from the elements while allowing 360-degree maintenance access to all engine components, filters, and drain plugs without removing the unit.

Starting and Controls: Electric start with ignition switch or strongly tethered key. Auxiliary manual recoil pull cord positioned for unimpeded range of motion. Remote 12V battery housed in an accessible vented battery box with bottom weep holes and ample jumper cable clearance.

Exhaust: Directed safely away from the operator station and side control levers.

Hydraulic Circuitry: Includes pump, fluid reservoir, double-acting cylinders, valving, hoses, and quick-disconnect fittings.

Reservoir: Features an external fluid sight glass, dipstick, and drain plug.

Fluid Type: MIL-PRF-2104J (OE/HDO-10) Engine Grade 10W or AW32 hydraulic oil.

Hose Management: Hoses routed with sufficient slack to prevent binding during articulation; protective hose sling provided to protect lines during tractor coupling/uncoupling.

Dual Hydraulic Wet Line System:

Auto-diverter valve for switching between tractor PTO wet line and pony motor.

Compatible with wet kit flows from 12 GPM @ 2,500 psi up to 57 GPM @ 3,000 psi.

Standard two-line 3/4-inch ISO 7241 Series B quick-action couplers (male nipple on tractor side, female coupler on trailer side) with 60-Series 3/4" 14 NPTF connections and protective male/female rubber boots.

Delivered with interchangeable hydraulic fittings or adapters to connect to all three specified sizes: 3/4-inch, 1-1/4-inch, and 1-3/4-inch.

Metal plates or stencils indicating inlet and outlet ports.

3.6 Rear Bridge and Running Gear

Bridge Construction: Tri-axle fixed frame load-bearing rear bridge with evenly distributed axle loading.

Lift Axle: Third axle equipped with pneumatic air-lift (flip axles strictly prohibited).

Rear Loading Ramps: Heavy-duty ramps rated for a minimum of 40,000 lbs across the rear axles. Equipped with side lift handles, cradle locking arm with keeper/catch, tethered clasp pins, and bottom weep holes for drainage. Minimum 3/4-inch welded cleat bars at deck transition points.

Rear Well Trough: Open center trough with heavy-gauge steel floor plates, extended sides, and rigid spine. Trough plates shall be easily removable for maintenance access.

Suspension & Valving: Air-ride suspension with manual and automatic suspension dump valve (Raise/Hold/Lower) positioned on the driver side between rear axles. Gooseneck equipped with engraved plate or decal: "Dump suspension before disconnect."

Axles, Hubs, and Brakes:

Heavy-duty round axles with automatic slack adjusters.

Oil bath hubs with visible oil-level sight glass.

Mechanical (analog) hub-odometer mounted on driver-side front axle hub (digital odometers prohibited).

Commercial FMVSS-121 Anti-Lock Braking System (ABS) with driver-side rear warning lamp.

Accessible manual moisture drain petcock for air reservoirs.

3.7 Wheels and Tires

Wheels: Solid steel single-piece hub-piloted dual wheels (super singles prohibited). Finished in matte black or lusterless Olive Drab Green (#34094 per SAE AMS-STD-595A). Air valves positioned for easy inflation access.

Tires: First-line commercial-highway steel-belted pneumatic radial tires rated for full design GVWR. Retreads prohibited. All tires brand matching; tire date codes shall not exceed one (1) year at time of delivery (Double Coin or unapproved economy brands prohibited). Valve extensions provided on all inner and outer dual positions.

Spare Assembly: One (1) matching spare tire and rim assembly mounted in a dedicated carrier that does not impede tractor clearance, crane lifting, or air loading operations.

3.8 Electrical and Lighting Systems

System Operating Voltage: Dual 12V/24V DC LED lighting system (operational range 6–28V DC).

Interface Plugs:

12-pin NATO intravehicular receptacle (24V tactical).

7-way SAE J560 receptacle (12V commercial).

Sealed commercial ABS connector.

Harnessing: Modular, fully jacketed, weather-sealed wiring harnesses. Routed with rubber-cushioned clamshell bolt-through brackets with sufficient support to prevent sagging. Minimum 30-inch ground clearance off-highway; pass-throughs equipped with protective grommets. Zip-ties, tape, and wire hangers are strictly prohibited.

3.9 Auxiliary Equipment

Toolboxes: Two (2) sealed, weatherproof steel toolboxes with bottom weep holes, lockable compression latches, and reinforced continuous hinges. Positions recommended by OEM and approved by NAVFAC EXWC.

Tie-Down Rings (D-Rings):

Eight (8) heavy-duty D-rings per side on main deck (10,000 lbs rating minimum each).

Two (2) D-rings per side on gooseneck.

Eight (8) D-rings welded down center deck well trough.

D-rings at rear bridge transition points.

Chain Keyholes: Main side beams and 4-way center deck chain slots accommodating standard 3/8-inch and 1/2-inch chain grab hooks.

Transport Accessories:

Full-width "WIDE LOAD" banner signs with integrated mounting hardware.

Two (2) pairs of oversize flag holders (front and rear) including flags.

Heavy-duty black rubber mud flaps (plain, no vendor advertising).

NHTSA FMVSS 108 DOT C-2 alternating red/white retroreflective tape.

Complete wheel removal tool kit (breaker bar, lug wrench handle, and socket tool).

SECTION 4: GOVERNMENT PRIME MOVER COMPATIBILITY

The trailer shall interface mechanically, electrically, and pneumatically with Government-Owned Vehicles (GOVs) equipped with fifth wheel heights ranging from 52 to 59 inches.

Prime Mover Interface Data Matrix

SECTION 5: AIR TRANSPORTABILITY, LIFT, AND TIE-DOWN REQUIREMENTS

5.1 Air Transportability (ATTLA Certification)

The trailer shall be certified for internal aerial delivery aboard USAF C-17 and C-5 aircraft in accordance with MIL-STD-1791D (Change 1), MIL-STD-1366E, and DODI 4540.07 (Change 3) at maximum trailer curb weight.

Procedural ATTLA Certification Workflow 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

1. Contract Award Notification: Contracting agency forwards contract award, MVDO, and sponsor/contractor contact details to NAVFAC EXWC within ten (10) working days.

Project Initiation: NAVFAC EXWC submits an official Sponsor Letter to Wright-Patterson AFB (ATTLA@us.af.mil) to open an ATTLA project case file.

Technical Package Submittal: Contractor submits the completed ATTLA Universal Data Spreadsheet, 3-view dimensional CAD drawings, FEA data, and tiedown patterns covering:

Approach, departure, and ramp breakover angles.

Axle and suspension load validation ( per axle).

Driveline and clearance verification with axle travel stops removed during ramp cresting.

Height, longitudinal location and identification of highest component on the trailer.

Physical Inspection and Weight Verification: Contractor provides GSA IOA with certified scale weight tickets verifying actual axle loads do not exceed 80% of rated capacity.

Final Certification Memo: Contractor provides approved ATTLA certification memo to the Government prior to final unit acceptance.

5.2 Lifting and Cargo Tie-Down Provisions

Design Standards: All provisions shall comply with MIL-STD-209K and MIL-STD-1791D.

Lifting Attachments: Sized for crane hoisting without requiring a spreader bar. Rated to lift the complete unladen trailer at full curb weight.

Tie-Down Provisions: Sized to secure the trailer with or without payload during rail, sea, and air transit.

Drain holes in tie-down pockets shall be shielded to prevent loose chain ends from striking hydraulic lines, valves, or wiring.

Working Load Limit (WLL) shall be cast as a raised marking on each D-ring body, positioned facing outward for visibility.

5.3 Transportation Data Plate

A non-ferrous, etched or engraved data plate complying with MIL-STD-209K and A-A-50271 (Composition A or C) shall be mechanically attached with rivets or machine screws. Plate shall include:

Sling diagram with required sling lengths, cable diameters, and minimum lifting angles.

Individual lift point capacities and maximum gross sling weight.

Silhouette of trailer indicating longitudinal and vertical center of gravity (CG).

Tie-down point shear and tension capacities.

SECTION 6: FINISH, COATINGS, AND CORROSION PREVENTION

6.1 Surface Preparation

All metal surfaces, chassis frame, undercarriage, and base materials shall be blast-cleaned and degreased to remove mill scale, grease, oil, weld spatter, slag, and surface contaminants prior to coating. Exposed fasteners shall be coated in flat lusterless green. Composite/wood decking shall be installed post-coating to prevent overspray.

6.2 Coating System Architecture

Primer / Basecoat: Two-component non-CARC epoxy or zinc-rich primer applied to a minimum Dry Film Thickness (DFT) of 4.0 mils.

Topcoat: Two-component non-CARC industrial polyurethane topcoat applied to a minimum DFT of 4.0 mils.

Color: Flat lusterless Olive Drab Green (Color #34094 per SAE AMS-STD-595A).

Combined Total Thickness: Minimum 8.0 mils DFT across all structural steel.

Corrosion Resistance: Capable of withstanding a minimum of 240 hours of salt spray exposure per ASTM B117 / ASTM D1654 with zero rusting or blistering, and gravel chipping resistance per ASTM D3170.

Underbody Wear Protection: Full undercoat abrasion-resistant coating (Line-X, Tectyl, or approved equal) applied evenly to lower flanges, outer webs, underbody members, and wash-down areas.

Non-Skid Surfaces: Applied grit coating or durable grip tape applied to all upper horizontal frame walking surfaces.

SECTION 7: MARKINGS, IDENTIFICATION, AND DATA PLATES

7.1 Marking Specifications Template

All stencil markings shall be applied using commercial stencil font in lusterless matte black polyurethane paint. Alternative laser-engraved, riveted, or welded metal plates are subject to NAVFAC EXWC approval; adhesive vinyl stickers are prohibited.

Standardized Stencil Schedule

7.2 Visual Reference Figures

Figure 1: Gooseneck Registration Stencil – Horizontal 3-inch stenciling centered on gooseneck drop beam.

Figure 2: Rear Crossmember Sill Stenciling – Single-line layout split across rear bumper channel.

Figure 3: Rear Ramp / Dovetail Stenciling – Lateral stenciling visible when ramps are raised or lowered.

Figure 4: Tire Pressure Stencil – Positioned on lower outer flange centered between tandem/tri-axle groupings.

Figure 5: Lift and Tie-Down Markings – D-ring painted lusterless green; "TIE DOWN" and "LIFT HERE" stencils on frame web.

7.3 Identification Data Plates

Data plates shall be non-ferrous metal, chemically etched or engraved, and secured with mechanical fasteners. The plate shall record:

Nomenclature: TRAILER, LOWBED HYDRAULIC RGN, 60-TON Manufacturer Name, Model, and Serial Number U.S. Navy Registration Number (USN) National Stock Number (NSN) Curb Weight / Maximum Payload Rating / Maximum GVWR / Maximum GCWR Pony Motor Engine Manufacturer, Model, and Serial Number Contract Number and Contracting Agency (NAVFAC EXWC) Date of Delivery (retained blank until formal DD Form 250 acceptance) Warranty Period (Months / Miles)

7.4 GSA Form 1398

The contractor shall affix one (1) copy of GSA Form 1398 (GSA Purchased Trailer) after final inspection is verified satisfactory.

SECTION 8: QUALITY ASSURANCE, VERIFICATION, AND DELIVERY

8.1 Workmanship and Rejection Criteria

Trailers shall be fabricated in a professional manner conforming to AWS and ASME welding codes. The presence of any of the following deficiencies shall constitute cause for immediate rejection:

Rough, sharp, or unfinished edges, burrs, seams, corners, or non-radiused panel edges.

Incomplete or defective welding, excessive slag, porosity, spatter, or undercut.

Paint runs, sags, blisters, craters, orange peel, fisheyes, or bare spots.

Cracks, dents, voids, or misalignments in body panels or structural framing.

Fluid leaks in hydraulic, pneumatic, or fuel lines.

Improperly supported wiring or piping; use of zip-ties or tape for cable retention.

Deviations from contract drawings, salient dimensions, or rated capacities.

8.2 Compliance Verification Schedule

The contractor shall host and execute compliance milestones according to the following schedule:

8.3 First Article Testing (FAT) at Gulfport, MS

The contractor shall deliver the First Production Vehicle to the Naval Construction Battalion Center, Gulfport, MS for formal Government operational trials:

Scope of Testing: 5-day evaluation including full-load trials, off-highway operation, ramp traversal, hydraulic wet kit interoperability, and 10 hours continuous operation (with 1-hour maintenance break).

Non-Conformance Remediation: All failures or non-conformances shall be remedied by the contractor at contractor expense, including round-trip shipping, prior to production authorization.

8.4 New Equipment Training (NET)

The contractor shall develop and conduct operator and maintainer training:

Structure: Two (2) 2-day training sessions held at a designated Government facility within 30 days after ARO.

Course Curriculum: 0.5 day classroom systems instruction and 1.5 days hands-on field maintenance/operation for up to 15 students plus 6–8 Government observers per session.

Training Material: Two (2) MS Word copies of all lesson plans, guides, and presentations delivered 45 days prior to training; student guides provided at the event.

8.5 Technical Manuals and Documentation

Delivery Schedule:

30–45 Days ARO: One (1) COTS commercial manual set for initial support development.

150–180 Days ARO: One (1) set of Draft Technical Manuals (searchable PDF).

Final Delivery: Approved As-Built Technical Manuals (searchable CD/digital and print) delivered with each trailer.

Manual Contents: Detailed Operator, Maintenance, and Illustrated Parts Breakdown (IPB) with exploded assembly diagrams, CAGE codes, part numbers, and line setting/build sheets listing VIN and UID data.

8.6 Warranty Coverage

Comprehensive 60-month (5-year) bumper-to-bumper warranty commencing on the date of final Government DD Form 250 acceptance at destination.

On-site initial warranty response within three (3) business days.

Contractor responsible for all parts, labor, and domestic expedited freight costs.

Authorized CONUS repair facilities provided for staged equipment repairs.

8.7 Delivery Locations and Ship-To Addresses

Trailers and modular components shall be delivered FOB Destination in accordance with the GSA Motor Vehicle Delivery Order to:

NAVFAC EXWC 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

· Will provide location (vendor must verify 90 days prior to shipment)

8.8 Delivery Hours and Base Access

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

· (POC verified 90 days prior to delivery) Unstacking Requirement: Trailers must be delivered fully unstacked with wheels on the ground. Any material handling equipment (cranes, riggers, forklifts) required to offload and unstack trailers shall be furnished solely by the delivery contractor.

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.