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Page Title:
Reliability Production Acceptance (Sampling) Phase Tests |
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|  MIL-N-85005A(AS)
Corrective action/recurrent control shall be applied in
accordance with 4.4.5.
Corrective action shall only be incorporated in the test
samples with procuring activity approval. Continued testing need not
await formal approval by the procuring activity of the contractor proposed
corrective action.
Reliability Production Acceptance (Sampling) Phase Tests -
4.4.3.2
The equipment, throughout production, shall be tested as outlined in
MIL-STD-781 (as modified herein) under the section entitled "Production
Acceptance (Sampling) Phase of Production Reliability Tests". Test level
E shall be used except the temperature extremes shall be -30C and +55C
and the vibration shall be 2 G 10% peak acceleration value at any non-
resonant frequency between 20 and 60 Hz measured at the mounting points
on the equipment.
*
4.4.3.2.1 All Equipment Test- - Each system produced except those
submitted for the Reliability Qualification Test, shall be tested for 50
hours. Prior to the 50 hour test on each equipment, a burn-in period may
be used at the option of the contractor. If the burn-in period is to be
used, the details thereof must be included in the approved test proce-
dures. To determine whether the MTBF is being met at any time during the
contract, the operating test hours and the failures thereon (not counting
burn-in failures or burn-in-operating time) shall be totaled and the
results compared with the reject line of Test Plan II of MIL-STD-781.
(Extend the line as necessary to accommodate the data.) These totals shall
accumulate so that at any one time the experience from the beginning of
the contract is included. At the conclusion of each month, the test
results shall be sent to the procuring activity and to the Naval Air
Systems Command, Attention: Avionics Division. At any time that the
current totals of test hours and test failures plotted on Test Plan II
curves show a reject situation, the procuring activity shall be notified.
The procuring activity reserves the right to stop the acceptance of
equipment at any time that a reject situation exists pending a review
of the contractor's efforts to improve the equipment, the equipment parts,
the equipment workmanship, etc., so that the entire compilation will show
other than reject decision. Each WRA produced for the purpose of spares
shall be tested for 50 hours with the final 25 hours failure free. Prior
to the 50 hour test a burn-in period equivalent to the burn-in used on
production systems produced for aircraft installs is required.
4.4.4 Special Tests - Special tests shall be conducted when
contracted for on a quantity of equipments for the purpose of checking
the effect of any design or material change on the performance of the
equipment and to assure adequate quality control. The equipment selected
for special tests may be selected from equipments previously subjected
to the sampling or reliability assurance tests.
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