MIL-PRF-38039D
3.7 Signal source. Actuation of an indicator light shall be initiated by a circuit closing
device (sensor) which shall not be considered a part of the system required to meet the tests
specified herein.
3.8 Fastening hardware. Fastening hardware shall be self-locking or otherwise secured
so it will not come loose in service.
3.9 Item identification and nameplate. Equipment, assemblies, and parts shall be marked
for identification and each indicator system shall have a permanently attached metal nameplate
with the following information:
Nomenclature
Applicable military specification
Design Activity, Cage Code
Manufacturer's I.D. (if different from design activity)
Contract or purchase order
Serial number (if assigned)
Additional requirements may be specified by the procuring activity (see 6.2).
3.10 Interchangeability. All parts having the same manufacturer's part number shall be
functionally and dimensionally interchangeable.
3.11 Environmental conditions. The warning, caution, and advisory system shall meet
the requirements of this specification when exposed to the following environmental conditions:
a. Temperatures ranging from -54 to +85oC with rated voltage applied to the indicator.
b. Vibration as described in RTCA/DO-160, Section 8, Figure 8-4, Curve Y.
c. Shock impact of 15g without causing malfunction of any part of the system except
indicator light source.
d. Relative humidity up to 95%.
e. Fungus growth.
f. Exposure to atmosphere containing salt-laden moisture.
g. Exposure to sand and dust.
h. Acceleration of 10 g applied in each of three mutually perpendicular directions.
i. Altitudes ranging from sea level to 100,000 feet.
j. Explosive atmosphere.
k. Leakage (immersion).
l. Solar radiation.
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.2).
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