MIL-DTL-3661D
4.4 First Article Inspection. When specified (see 3.1 and 6.2 d), it shall be tested for the characteristics
specified in table IV.
4.4.1 Samples for first article. All test units shall be tested with the lenses assembled to the units.
4.4.1.1 Single submission. Twelve sample lampholders, indicator lights, or basic indicator-light housings
and at least one lens of each style, color, and transmittance shall be submitted for first article inspection. As many
different lens styles, colors, and transmittances as possible should be tested with each basic indicator-light housing
sample to give the broadest representative sample used with each indicator light.
4.4.1.2 Group submission (when applicable). Samples shall be submitted as specified (see 3.2).
4.4.2 Test routine. All sample units shall be subjected to the inspection of group I, table IV. The sample
units shall then be divided as specified in table IV for groups II t o V inclusive, and subjected to the group inspection
for their particular group, in the order shown.
4.4.3 Failures.
4.4.3.1 Removable lens type failure. Failure in any of the applicable examinations or tests of table IV shall
be cause for refusal. Lamp failure will not be cause for failure of any parts tested, provided the test at which failure
of lamp is noted, is stopped immediately and a new lamp is installed and the lamp immediately lights. The test shall
then be continued.
4.4.3.2 Non-removable lens type failure (excluding nomenclature display types). Failure in any of the
(a) Table IV, group II, temperature cycling.
(b) Table IV, group III, vibration and shock.
1
If one indicator fails any of the tests specified in 4.4.3.2( a) or (b), it may be replaced by 6 of the same type
indicators and the testing in that group resumed. Any further failure shall be cause for refusal.
12
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business