MIL-DTL-62567D(AT)
4.3 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be
conducted under the following standard (room) ambient conditions:
a. Temperature: 77±18 degrees Fahrenheit (°F)
b. Relative humidity: Uncontrolled room ambient
c. Atmospheric pressure: Site pressure
4.4 First article inspection.
4.4.1 Sample size. Six torsion bars of the 12292010-1 configuration shall be subjected to
first article inspection.
4.4.2 Inspection routine. The first article samples shall be subjected to the group A, B, C
and D inspections below, except that the 100,000 cycle minimum of 4.5.2 shall not apply.
4.4.3 Failure. Failure to pass group A, B and C inspections shall be cause for refusal to
grant first article approval. Each torsion bar subjected to group D inspection shall demonstrate a
minimum life of 45,000 cycles. Average life calculation of 80,000 cycles will be based on the
total number of endurance cycles accumulated during testing divided by the total number of
torsion bars tested. If a torsion bar exhibits endurance life of 200,000 cycles or more prior to
failure, its life shall be taken as 200,000 cycles for the average life calculation. Failure to meet
group D minimum life or average life requirements shall be cause for refusal to grant first article
approval.
4.4.4 Disposition of samples. Samples which have been subjected to first article
inspection shall not be delivered as new equipment under the contract.
4.5 Conformance inspection.
4.5.1 Inspection of product for delivery. Inspection of product for delivery shall consist
of group A, B and C inspections.
4.5.1.1 Inspection lot. Unless otherwise noted, an inspection lot shall consist of all
torsion bars produced under essentially the same conditions and offered for inspection at one
time. The lot may include a mixture of the torsion bar configurations specified on
Drawing 12292010. Sufficient quantities of 12292010-1 configuration shall be fabricated to
verify conformance to 4.4.1.
4.5.1.2 Group A inspection. Group A inspection shall consist of the inspections
specified in table II.
4.5.1.2.1 Group A sampling. 100 percent inspection shall apply unless an approved
statistical process control (SPC) plan is used (see 6.4.2).
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