CHAPTER  5 TM  55-2320-272-14-1 AIR TRANSPORT Section   I. 5-1.   General The trucks are all air transportable on C-5 and C- 17 aircraft. The M923/M923A1/M923A2 thru M932/ M932A1/M932A2 trucks are air transportable on C- 130 and C-141 aircraft. The M936/M936A1/M936A2 wrecker trucks are transportable on the C-130 and C-141 aircraft using special procedures. Variables such as weather, airfield characteristics, and distance to destination affect total cargo loads and operating ranges. AFP 76-2 provides general guidance on total cargo loads and operating ranges. For specific guidance, contact the nearest Air Mobility Command (AMC) activity. The shipping unit must ensure that the trucks are properly prepared for air transport before reaching the marshaling area. All trucks cargo must be properly secured. The shipping unit will assist the aircraft loadmaster/crew in loading and tying down the trucks. It is the responsibility of the shipping unit to provide shoring material. The M925, M925A1, and M929 trucks are certified for low-velocity airdrop (LVAD) from the C-130 and C-141, and low-altitude parachute extraction (LAPE) from the C-130. Procedures can be found in FM  10-526. Section   Il.   TRANSPORT 5-4.   USAF   Cargo   Aircraft The trucks are all certified for transport on the C-5 and C-17 aircraft. The M923/M923A1/M923A2 thru M932/M932A1/M932A2 trucks are certified for airlift on the C-130 and C-141 aircraft. The M936/ M936A1/M936A2 wrecker trucks are certified for transport on the C-130 and C-141 aircraft using special procedures shown in paragraph 5.7.1. The maximum vehicle axle loads permitted on the C-130 and C-141 aircraft floors limit the allowable cargo payload on each of the vehicles. The maxi- mum axle loads are 13,000 pounds for the C-130 and 20,000 pounds for the C-141. Axle loads be- tween 6,000 and 13,000 pounds are limited to a 28.75-foot portion of the C-130, and axle loads between 10,000 and 20,000 pounds are limited to 26.7-foot  portion  of  the  C-141. GENERAL 5-2.   Safety Besides the general safety notes in paragraph 1-6, the following safety considerations and precautions apply for air transport: a. Personnel must not refuel or otherwise service the trucks within 50 feet of the aircraft. b. Personnel will wear ear protection (plugs) at all times while working on the flightline. c. Fire extinguishers will be readily available during aircraft loading and unloading operations. d. The vehicle maximum speed is 5 miles per hour (mph) when within 25 feet of an aircraft. The maximum speed on loading ramps or inside an aircraft is 3 miles per hour (mph). e. The fuel tank will be filled in accordance with TM 38-250/AFR 71-4, Preparation of Hazardous Materials for Military Air Shipment. 5-3.   Hazardous   Material The shipping unit must provide written notification before shipping dangerous or hazardous materials aboard military or Department of Defense (DOD) contract aircraft. Specific instructions are in TM 38-250/AFR 71-4 or in CFR 49. BY   CARGO   AIRCRAFT 5-5.   U.S.   Army   Aircraft The trucks exceed weight and dimensional limita- tions for internal transport on U.S. Army fixed- wing and rotary-wing aircraft. While several of the cargo truck and truck tractor versions are within the CH-47 helicopter external air transport capacity, there is no requirement for EAT. Therefore, Natick Research, Development and Engineering Center (Natick) has not evaluated nor certified the trucks for helicopter lift. The U.S. Marine Corps is working with Natick to evaluate and certify some of their trucks for EAT by the Marine Corps CH-53. If certified, the trucks will only be transportable at curb weight using a modified/airlift bumper. For further information contact Natick, SATNC-UAS, Natick, MA 01760. 5-1