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MIL-F-63281A (AR)
Any fuze that is unsafe to handle, fire or dispose of following the
Five Foot Drop Test or does not meet the arming time safety
definitions of 4.5.23 is classified as a safety failure. If the
sample fails the above acceptance criteria, the lot shall be
rejected.
4.5.20 Non-environmental test. A random sample of eight (8)
fuzes shall be selected and subjected to the test and acceptance or
rejection criteria as specified in 4.5.22.
4.5.21 Vibration test.  Fuzes shall be subjected to Helicopter
Vibration as specified in Figure 1. Vibration conditioning at
resonance is not required. After vibration, the fuzes shall be
subjected to the tests and acceptance or rejection criteria
specified in 4.5.22.
Note:  The fuzes shall be subjected to and must pass the continuity
test following the vibration test. If one or more continuity
failures occur in the test sample the lot shall be rejected.
4.5.22 Acceptance criteria.  The sample fuzes from the
Non-environmental (8) and Vibration (24) tests shall be combined
into one sample and subjected to the following tests specified in
Table V.
TABLE V
Sample Size - 32
Test Method
Paragraph
Accept
Reject
Test
4.5.17
1
0
Non-arm
Arming Time
4.5.24
1
0
Safety Failure
Arming Time
4.5.24
2
1
Under Min.
Arming Time
4.5.24
1
0
Over Max.
4.5.24
1
0
Fail to Arm
4.5.38
1
0
Mechanical interrupt
If all tests are acceptable, the sample fuzes from the
Non-environmental test may be returned to the lot after disassembly,
resetting the S&A into the safe position, and reassembly.
81

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