MIL-PRF-29250C
3.9.6 Backing of ILJS. The ILJS, when at an 18-inch (457 mm) towing height and loaded in
accordance with 3.8, and towing assembly shall provide sufficient control to the container so that
the prime mover can move the container backwards for a distance of 50 ft (15 240 mm) in a 10-ft
(3 048 mm) wide lane.
3.9.7 Level loading. The ILJS, when loaded in accordance with 3.8, and in the outboard mode,
shall be capable of level loading the ISO container on and off a C-130 and C-141 aircraft. At no
time during level loading using the ILJS shall the container be greater than aircraft floor loading
limits in accordance with MIL-STD-1791. Level loading shall be accomplished in 20 minutes or
less for each container. Loading shall commence when the fully loaded container (see 3.8), with
pallets and loading jack attached, is raised to the required loading height and is backed up to
within one-foot (305 mm) of the aircraft cargo platform. Loading is complete when the container
is in position to tiedown within the aircraft. Pallet dimensions shall be 88 inches by 108 inches
(2 235 mm by 2 743 mm) which is commonly referred to as a 463L pallet.
3.9.8 Flatbed truck and 25k-loader loading. The ILJS shall be configurable in the outboard
position for loading ISO containers onto and off flatbed trucks and 25K-loaders. The ILJS shall
be attachable from the ground to a truck-mounted or 25K-loader-mounted container. Loading
shall be accomplished in 45 minutes or less. Loading shall be accomplished manually by no more
than four personnel. Loading shall commence when the container is resting on the ground and
jacks and all hardware are removed. Loading is complete when container is resting on the flatbed
truck or 25K-loader and all jacks and hardware are removed. Unloading shall be accomplished in
45 minutes or less. Unloading shall be accomplished manually by no more than four personnel.
Unloading shall commence when the container is resting on the flatbed truck or 25K-loader and
jacks and all hardware are removed. Unloading is complete when the container is resting on the
ground and all jacks and hardware are removed.
3.9.9 Wind load. The ILJS shall be capable of safely performing all functions in each operational
cycle with not less than a 30 mile per hour (mph) (48.3 kilometre per hour (km/h)) wind load on
the 20-ft (6 096 mm) length of the container, when the jacks are at the 66-inch (1 676 mm) height
and the wheels are restrained.
3.9.10 Parking brake performance. The parking brakes shall be sufficient to hold the
container/ILJS when loaded in accordance with 3.8, and on slopes defined in 3.9.4 and 3.9.5.
3.9.11 Mobility requirements. The ILJS, when at an 18-inch (457 mm) towing height and loaded
in accordance with 3.8, shall be capable of towing mobility requirements as specified in table I.
The test mileage shall be accumulated with a fully loaded ISO container. In addition, the ILJS,
when at an 18-inch (457 mm) towing height and loaded in accordance with 3.8, shall be tested for
backing up (see 3.9.6) on a level paved surface for a distance of not less than 50 ft (15 240 mm).
An unpaved surface is defined as an unpaved graded dirt road having a California Bearing Ratio
of 40.
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