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|  MIL-R-8236F
3.5.5.1 High temperature. The inertia reel assembly or subassembly under best shall withstand a
non-operating (storage) high temperature cycle exposure of +95F to +230F (35C to 110C) without performance
degradation. The inertia reel shall then deliver specified performance (operational) at + 170F (76.6C) without
temporary or permanent performance degradation below the performance levels specified (see 4.5.5.1).
3.5.5.2 Low temperature. The inertia reel assembly or subassembly under test shall withstand a non-operating
(storage) low temperature exposure of -65F (-54C) without perfomance degradation. The inertia reel shall then
deliver specified performance (operational) at -40F (-40C) without temporary or permanent performance
degradation below the performance levels specified (see 4.5.5.2).
3.5.5.3 Humidity. The inertia reel assembly or subassembly under test shall withstand exposure to 160F
(7lC) and 80% relative humidity without temporary or permanent performance degradation or causing physical
or chemical deterioration of any inertia reel components (see 4.5.5.3).
3.5.5.4 Fungus. The inertia reel assembly or subassembly under test shall show no evidence of being a
nutrient for fungi. nor when exposed to fungal organisms shall the inertia reel assembly or subassembly exhibit any
performance degradation below the performance levels specified (see 4.5.5.4).
3.5.5.5 Salt fog. The inertia reel assembly or subassembly under test shall be corrosion-resistant or processed
to withstand the corrosive effects of salt fog and stack gases without any performance degradation below the
performance levels specified (see 4.5.5.5).
3.5.5.6 Sand and dust. The inertia reel assembly or subassembly under test shall withstand exposure to a
170F (76.6C) sand environment and 73F (22.8C) dust environment without experiencing performance
degradation below the performance levels specified (see 4.5.5.6).
3.5.5.7 Vibration. The inertia reel assembly or subassembly under test shall withstand vibration environments
of basic transportation. propeller aircraft, jet aircraft, and helicopters without inadvertent lock-ups or performance
degradation below the performance levels specified (see 4.5.5.7).
3.5.6 Inertia reel life cycle. The inertia reel assembly or subassembly under test shall withstand the life cycles
without performance degradation below the performance levels specified (see 4.5.6).
3.5.6.1 Stowage/take-up mechanism life cycle. The inertia reel stowage/take-up mechanism shall have a
functional life of not less than 60,000 cycles distributed as follows:
0 to 0.25 full strap extension.
a. 36,000 cycles
0 to 0.50 full strap extension.
b. 12,000 cycles
0 to 0.75 full strap extension.
c. 6,000 cycles
O to full strap extension.
d. 6,000 cycles
3.5.6.2 Shoulder harness attachment cable terminal fitting life cycle For MA-1 and MA-2 type inertia reels,
0
the cable, fully retracted and bent 30 from the axis of the cable at the point of the cable entrance to the housing,
shall withstand 5,000 cycles of 360 rotation with the control handle in the "auto-lock" position and 5,000 cycles of
360 rotation with the control handle in the "manual-lock" position with no evidence of breakage or excessive wear
on either the cable or the terminal fitting which would degrade the performance of the inertia reel assembly below
the performance levels specified (see 4.5.6.2).
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