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|  MIL-T-81527B(AS)
4.3.4 Equipment Failure. Should a failure occur during either the sampling
tests, the following action shall be taken:
(a) Determine the cause of failure.
(b) Determine if the failure is an isolated case or design defect.
(c) Where practical, include a test in the individual test to check all
equipment for this requirement until assurance is obtained that the defect
has been satisfactorily corrected.
4.4 Life Test. A 300-hour life test shall be conducted at the contractor's
plant on an early equipment representative of the current production. The
life test shall be performed under the conditions specified in section 4.4.1.
The life test sample shall be selected by the Government Inspector in
accordance with the following: (Equipments which have successfully passed
the sampling tests or special tests may be selected for life tests.)
Quantity of Equipments
Quantity to be tested
Offered for Acceptance
1
First 25
1 additional
26 to 200
1 additional
201 to 500
1 for each additional 500 or
Over 500
fraction thereof
The life test shall be conducted under the following
4.4.1 Test Conditions.
environmental conditions:
Room Ambient
(a)
Temperature
-
Normal Ground
(b) Altitude
Room Ambient
(c) Humidity
The test may be run continuously or intermittently.
4.4.2 Test Periods.
Any period of operation shall be sufficient in duration to permit the equipment
Periodically, the equipment shall be turned on
temperature to stabilize.
and off and put through various phases of operation.
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