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|  MIL-N-81207A(AS)
*NOTE: If by contract action the Initial Production Test is deleted,
then a Sample Test shall be conducted on the equipment from the first
10 produced.
4.4.2.1 Scope of Tests - As a minimum, each equipment selected
for sampling tests shall be sub jetted to the following tests:
(1)
Complete operational test at ambient room
conditions, making all necessary measurements
to assure that all applicable specification
requirements have been met.
(2)
Operational tests at certain environmental
conditions. The conditions may vary for each
equipment tested and should be based on results
of the preproduction, Initial production,
individual and special tests.
Manufacturing run-In test, Specified in 4.4.1.3,
(3)
except that the test duration shall be 50 hours-
with no restriction on the number of failures.
However, each failure shall be analyzed as to
cause and remedial action necessary to reduce
the possibility of its recurrence in fixture
equipment.
4.4.3
Reliability Assurance Tests - Reliability Assurance Tests
shall be conducted using MIL-STD-781. Tests as requlred by both the
Qualification Phase and the Production Acceptance (Sampling) Phase shall
be conducted. Classification of failure shall be in accordance with
MIL-STD-781 and AR-34.
4.4.3.1
Qualification Phase - Prior to the acceptance of equipments
under the contract or order, a minimum of three (3) equipments shall be
tested as outlined in MIL-STD-781, under the section entitled "Qualification
Phase of Production Reliability Tests". The maximum number of equipments
to be used shall. be those listed In Table 5 of MIL-STD-78l. For the
Qualification Phase, Test Level F shall be used. The Accept-Reject
Criteria for Test Plan II shall be used. External forced air cooling
air at 71C and 0.95 pounds/min. shall be used during the heating portion
of the temperature cycle. During the cooling portion of the temperature
cycle, forced air cooling shall not be used.
4.4.3.2
Reliability Production Acceptance (Sampling) Phase Tests -
The equipment, throughout production, shall be tested as outlined in
MIL-STD-78l (as modified herein) under the section entitled "Production
Acceptance (Sampling) Phase of Production Reliability Tests." Test level
F shall be used. External forced air cooling at 71C and 0.95 lbs/min. shall
be used during the heating portion of the temperature cycle. During the
cooling port ion of the temperature cycle, forced air cooling shall not be
used.
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