MIL-DTL-25677E
4.7.11 Vibration and leakage test (see 3.7.10). The adapter, pressure cap, and dust cap when
subjected to vibration testing shall meet the requirements of 3.7.10. The following details shall apply:
a. The two adapters shall be mounted to a representative section of aircraft structure and tested
in accordance with MIL-STD-810, procedure XII.
b. Using grade 3 or 4 oil in accordance with MIL-PRF-7808, hydraulic back pressure equivalent to
a 2-foot (609.6 mm) head of oil shall be maintained in the adapter during the test period.
c. The one adapter shall have a pressure cap the other adapter shall have a dust cap installed
during one-half of the total test period.
d. Following the vibration period, the low temperature leakage test of 4.7.5 shall be repeated.
e. At no time during the test shall the pressure or dust cap become loosened or unattached, nor
shall there be any visible signs of leakage.
4.7.12 Fire proof test (see 3.7.11). Adapters one with a pressure cap and one with a dust cap
installed shall meet the fire proof testing in accordance with SAE-AS4273. The following details shall
apply:
a. Samples:
(1) Adapter with pressure cap.
(2) Adapter with dust cap.
b. Component orientation shall simulate realistic engine compartment fire conditions.
c. Samples shall be directly exposed to the flame.
d. A visual inspection for leakage shall be made during and after the test.
e. Sufficient instrumentation shall be included so continuously record critical parameters.
f. Remotely controlled color video and stop-action photographic test facility equipment shall be
provided. Voice input on video tape shall be provided for clarification of test times and
conditions.
g. Thermocouples shall be provided at the interface between flame pattern and surface to monitor
and record flame temperature during testing to verify that flame temperature does not fall below
pre-test burner calibration limits.
h. Thermocouple(s) shall be mounted directly within the flame pattern.
j. 15 minute duration.
k. Shall meet the requirements of 3.7.11.
4.7.13 Disassembly and inspection (see 3.7.12). After completion of the tests, the adapter shall be
disassembled and inspected and shall meet the requirements of 3.7.12.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the
contract or order (see 6.2). When actual packaging of material is to be performed by DoD or in-house
contractor personnel, these personnel need to contact the responsible packaging activity to ascertain
packaging requirements. Packaging requirements are maintained by the Inventory Control Point
packaging activities within the Military Service or Defense Agency, or within the Military Service System
Commands. Packaging data retrieval is available from the managing Military Department's or Defense
Agency's automated packaging files, CD-ROM products, or by contacting the responsible packaging
activity.
6. NOTES
(This section contains information of a general or explanatory nature which may be helpful, but is not
mandatory.)
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