A-A-2523B
4.6.2 Drop test. An assembled case shall be filled
with pillows or bags, loaded with sand or vermiculite or some similar
substances, to attain the test loads and at the same time fill from 50 to 75
percent of the interior to allow for load shifting. For both cases the net load
shall be 25.0 pounds (plus or minus 0.5 pounds). The case shall be closed and
remain unlocked during the test. The weighted case shall then be dropped 15
times to a concrete floor or steel plate from a height of 36 inches (plus or
minus 1 inch, measured from the lowest point of the case): 5 times so that it
lands on its feet or bottom bumpers, 5 times so that it lands on one side end
and 5 times so that it lands on the opposing side end. Upon completion of the
test, the case shall be examined to insure that none of the components are
cracked, fractured, perforated, loosened or deformed to the extent that the
case is inoperable. After performance of the test, the case shall be fully
functional. Cosmetic imperfections resulting from the drops that do not affect
the function of the case shall not be considered defects. The failure of any
sample to pass this test shall constitute failure of the lot.
4.6.3 Handle test. Support the case in an upside down position so that
the handle will face the floor and swing freely. Attach directly to the handle
a 150 pound (plus or minus 5 pounds) weight, evenly distributed over the length
of the handle and leave suspended for 30 minutes. Remove the weight and check
attachment of handle to the case for loosening and/or pull-through of rivets or
other attaching hardware. At completion the handle shall remain securely
fastened to the case and shall not be deformed and shall show the same freedom
of movement as before the test. The failure of any sample to pass this test
shall constitute failure of the lot.
4.6.4 File pocket test. The case shall be open and empty. The file
pocket retaining straps shall be unfastened from the file pocket. A test load
of 10 pounds, pulling out on the pocket, shall be exerted on the upper right
corner of the outermost file pocket and held for a duration of 15 minutes.
Afterwards, the same test load shall then be applied to the upper left, lower
right, and lower left corners of the pocket each for a duration of 15 minutes.
At the completion of the test, the file pocket’ shall show no signs of
deformation or loosening from the case shell.
4.6.5 Tumble test. The tumble test shall be performed on first article
inspections only. Load and close an assembled case as specified in the drop
test and place it in a hexagonal drum 7 feet in diameter across the corners,
containing baffles arranged on the inner periphery of the drum. The drum shall
revolve at a speed of 2 RPM (plus or minus 1/16 RPM). The drum shall be in
accordance with ASTM Standard D 782.
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