MIL-DTL-9479E (USAF)
4.5.5 Ejection control forces. Each ejection control handgrip shall be actuated. The force
required for actuation shall be measured and shall meet the requirements specified (see 3.2.13.2).
4.5.6 Environmental tests. Environmental testing shall be planned and conducted under the
guidance of DO-160C (RTCA/FAA) (see 3.4.5.5).
4.5.6.1 High temperature. The seat system shall be subjected to a high temperature test in
accordance with DO-160, Section 4, Category D1, Operating High Temperature Test, using a
constant ambient temperature exposure of 160°F. Operation of the seat shall include the ejection
controls, seat adjustment, inertia reel control, emergency oxygen, and manual parachute release.
4.5.6.2 Low temperature. The seat system shall be subjected to a low temperature test in
accordance with DO-160, Section 4, Category D1, Ground Survival Low Temperature Test and
Operating Low Temperature Test using a constant ambient temperature of -65°F. Operation of
the seat shall include the ejection controls, seat adjustment, inertia reel control, emergency
oxygen, and manual parachute release.
4.5.6.3 Vibration. The seat system shall be subjected to a vibration test in accordance with DO-
160, Section 8, Standard and Random Vibration. The vibration profile shall be in accordance
with the established or projected profile for the specific aircraft or application. Equipment
operation shall include operation of the ejection controls, seat adjustment, and inertia reel control.
4.5.6.4 Salt fog. The seat system shall be subjected to a salt fog test in accordance with DO-160,
Section 14, Category S, 5% Salt Spray. Equipment operation shall include operation of the
ejection controls, seat adjustment, inertia reel control, emergency oxygen, and manual parachute
release.
4.5.6.5 Humidity. The seat system shall be subjected to a humidity test in accordance with DO-
160, Section 6, Category A. Equipment operation shall include operation of the ejection controls,
seat adjustment, inertia reel control, emergency oxygen, and manual parachute release. In
addition, these operations shall be performed at the end of five cycles (120 hours) with the
condensation remaining on the seat system.
4.5.6.6 Rain. The seat system shall be subjected to a rain test in accordance with DO-160,
Section 10, Category R, Spray Proof Test to simulate blowing rain. Equipment operation shall
include operation of the ejection controls, seat adjustment, inertia reel control, emergency oxygen,
and manual parachute release.
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