MIL-M-4871C (USAF)
4.4 Quality conformance inspection.
Quality conformance inspection shall
consist of:
a.
Examination (see 4.5).
b.
Sampling plan (see 4.4.1).
4.4.1 Sampling plan. A random sample of platforms shall be selected from
each lot and subjected to the tests specified in 4.6. The sample shall be
selected in accordance with MIL-STD-105, General Inspection Level II. Unless
otherwise specified, the AQL shall be 2.5.
4.4.2 Lot. For the purpose sampling, a lot shall be considered all
platforms offered for inspection at one time.
4.5 Examination. Each platform shall be examined to determine compliance
with this specification. All features and components shall be inspected with
respect to design, construction, materials, workmanship and finishes. Particu-
lar attention shall be given to welds.
4.6 Sampling tests. Each of the sample platforms selected in accordance
with 4.4.1 shall be subjected to the following tests. Any sample failing to
pass any of the tests shall be rejected and if the total number of rejections
exceed the acceptance number for the sample, the lot represented by the sample
shall be rejected.
4.6.1 Dielectric test. The maintenance platform shall be subjected to a
dielectric test of 1460 volts AC rms, 60 cycles, for a period of one minute
between each lead of power cord and a metal part of the platform. For this
test, an Ideal Commutator Dressor Company's model 36 tester, or equal, may be
used.
4.6.2 Endurance test. With a platform load of 500 pounds, the maintenance
platform shall be operated through 50 cycles. A cycle shall be one complete
operation from the lowest position to the highest position and back again to
the lowest position. Two of these cycles shall be by manual operation.
Inspection shall reveal no failure of welds, materials, bolts, elongation of
bolt holes, or leakage of hydraulic fluid.
4.6.3 Static load test. The maintenance platform shall be completely
assembled and a static load of 1,000 pounds placed at or near the center of the
maintenance platform. The maintenance platform shall then be operated two
times through the entire range. The load shall then be removed and the mainte-
nance platform operated two times through its entire range. Inspection shall
reveal no failure of welds, materials, bolts, elongation of bolt holes, or
leakage of hydraulic fluid.
4.6.4 Settling test. With a load of 1,500 pounds on the maintenance plat-
form, the elevating systems shall be in the fully extended position. The
maintenance platform shall be allowed to remain under load for a period of
one hour without locking devices in use. The settling rate of either
elevating mechanism under this test load shall not exceed 0.020 inches per
hour.
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business