Equipment List 4. MB2_Tow_Tractor.pdf

Internal Air Transport Certification

ASC/ENFC (ATTLA)

2530 Loop Road West

WPAFB, OH 45433-7101

https://afkm.wpafb.af.mil/ATTLA (direct) https://wwwd.my.af.mil/afknprod/ATTLA (AF Portal)

Date: 29 June 2009 Item Nomenclature: NMC-Wollard 400MB2 Tow Tractor Class I and II File Number: 2009.03.14 Requestor: 642 CBSG/GBEC (Robert Woodruff)

Item Description: The NMC-Wollard 400MB2 Tow Tractor Class I and II is identified to be two axle aircraft tow tractors (Class I: NSN 1740-01-559-3504YW and Class II: NSN 1740-01-559-7047YW).

Refer to data plate to determine Class as the vehicles are nearly identical. Approximate dimensions are 231” L x 102” W x 89” H. Gross weight of 40,000 lbs (Class I) and 53,000 lbs (Class II) with a gross vehicle weight rating (GVWR) of 43,000 lbs and 54,000 lbs respectively. The tractor has axle weights of 22,000 lbs (Class I) and 27,000 lbs (Class II) with an axle rating of 30,000 lbs each.

Certified Aircraft: USAF C-17 and C-5

Conditions of Certification:

1. Maximum Weight for Air Transport:

a. Gross Vehicle Weight:

(1) Class I – 43,000 lbs (Vehicle limit)

(2) Class II – 54,000 lbs (Vehicle limit)

b. Axle Limits:

(1) Class I – 22,000 lbs (Sleeper shoring limit)

(2) Class II - 27,000 lbs (Rolling and sleeper shoring limit)

2. Item Preparation:

File Number 2009.03.14

a. Front coupler/hitch must be removed or repositioned higher on the vehicle to achieve an adequate approach angle.

b. Tire inflation pressure shall not exceed 130 psi. This is the manufacturer allowed limit and can support required weight.

c. All hazardous materials (to include fuel level, batteries, etc.) must be prepared and certified for airlift in accordance with TM 38-250/AFMAN 24-204(I). Do not consider this air transport certification as approval for hazardous materials. Authorization for airlifting hazardous material is the responsibility of 401 SCMS/GUMAA (DSN 787-4503 or COM (937) 257-4503).

3. Loading Instructions:

a. Item may be driven or backed into the aircraft.

b. C-5 will be configured in the forward or aft kneeled position. The vehicle shall be loaded through kneeled end.

c. C-17: Two rows of rolling shoring shall be placed on the ramp toes, cargo ramp and cargo floor when loading the Class II tow tractor.

d. Four stacks of sleeper shoring are required. Two stacks shall be placed under or adjacent to each axle/vehicle end (one stack per side). See paragraph 5.a for required dimensions.

4. Restraint Requirements: The NMC-Wollard 400MB2 Tow Tractor Class I and II and all accompanying cargo must be restrained to meet MIL-HDBK-1791 requirements of 3G forward, 1.5G aft and lateral, and 2G up. In addition, stored or installed equipment must meet these requirements and be capable of withstanding a 4.5G down load. There are two tiedown provisions on the front and four tiedown provisions on the vehicle’s aft end. All provisions are rated at 50,000 lbs. See data plate on vehicle or photos 1 and 2 below for specific provision locations.

5. Required Shoring Dimensions & Diagrams:

a. Sleeper Shoring: The sleeper shoring must be stacked snug with axle/s or frame structure/s and will be secured with cargo straps.

(1) Class I – 10” L x 22” W

(2) Class II – 12” L x 25” W

b. Rolling Shoring:

Photo 1. Front End Left Side Provision Photo 2. Aft End Provisions

File Number 2009.03.14

(1) Class I – None Needed

(2) C-17: Class II – 20” W x 1” H. Length dimension for each row shall be sufficient for timely load/off-load operation.

Note that rolling shoring is not required on C-5 aircraft.

Required Distribution:

1. Shipper shall give a copy of this certification to the ATOC representative when the item is presented for airlift. This memo shall be part of the official cargo manifest documentation package and shall be briefed to the aircraft loadmaster prior to loading this item.

2. AMC/A3V.

3. SDDC TEA.

Point of Contact: Michael Schneider, at Michael.Schneider2@wpafb.af.mil, DSN 674-5459 or Commercial (937) 904-5459. Refer to file number 2009.03.14 to reference this item.

Reviewed by: MELVIN C.J. SANTIAGO Aerial Delivery Technical Expert Crew Systems Branch

Approved by: TIMOTHY W. BUSH Acting Technical Advisor Crew Systems Branch