All Equipment Test

Page Title: All Equipment Test
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MIL-N-81857(AS)

4 . 4 . 3 . 2 . 1 All Equipment Test - Each equipment produced

shall be tested for 50 hours. Prior to the 50 hour test on each equip-

ment, 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

i n the approved test procedures. To determine whether the MTBF

is being met at any time during the contract the operating test hours

and failures thereon (not counting burn-in failures or burn-in

o p e r a t i n g time) shall be totaled and the results compared with the

reject ine of Test Plan II of MIL-STD-781. (Extend the line as

n e c e s s a r y to accommodate the data.) These totals shall accumulate

s o that at any one time the experience from the beginning of the

c o n t r a c t is included. At the conclusion of each month the test re-

s u l t s shall be sent to the procuring activity and to the Naval Air

S y s t e m s 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 reserves the right to stop the ac-

n o t i f i e d . The procuring activity reserves the right to stop the ac-

c e p t a n c e of equipment at any time that a reject situation exists

p e n d i n g a review of the contractor's efforts to improve the equip-

ment, the equipment parts, the equipment workmanship, etc.,

so that the entire compilation will show other than a reject decision.

4 . 4 . 4 S p e c i a l T e s t s - Special tests shall be conducted for

the purpose of checking the effect of any design or material change

on the performance of ihe equipment and to assure adequate quality

c o n t r o l . The equipment selected for special tests may be selected

f r o m equipments previously subjected to the sampling or reliability

a s s u r a n c e tests.

S p e c i a l Test Schedule - Selection of equipments

4.1.1.1

for special tests shall be made as follows:

(1) On an early equipment after an engineering

o r material change.

(2) Whenever failure reports or other informa-

tion indicate additional tests are required.

(This will be determined by the procuring

activity.)

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