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|  MIL-S-18471G(AS)
3.2.2.12.4.2 Manual control. Manual control of the escape path clearing
function shall be provided by the manual control handle which shall be designed
for use under emergency egress conditions as specified in 3.3.3. The manual
control handle for the manual control mode shall be located on the left side
of the aircraft, at the height of the headrest, in a position accessible to the
aircrewmember (while restrained in the full back position). The handle shall
be large enough for the gloved hand of a maximum specified population aircrew-
member to grasp and operate. The handle design and location shall not
interfere with ingress to or egress from the ejection seat assembly.
Particular attention shall be given to the manual mode capability to provide
positive aircraft canopy clearance when the aircraft is submerged.
3.2.2.12.4.3 Interlocks. To eliminate the possibility that failure of
control or signal elements will prevent backup mode operation and catapult
firing, interlocks shall not be used in the escape path clearance subsystem.
If a time delay (up to 0.3 seconds) is used, then the automatic control of
3.2.2.12.4.1 shall be used in lieu of interlocks to enable catapult firing
upon completion of pre-ejection events but prior to the expiration of the time
delay.
3.2.2.12.5 Escape path interface. All equipment adjacent to the periphery
of the escape path shall be free of sharp edges and corners~ projecting bolts,
and other potentially injurious features.
3.2.2.12.6 Ejection clearances. Ejection clearances shall be provided
in accordance with MIL-STD-1333 and shall be mocked-up in accordance with MIL-
M-8650 for demonstration as specified in 4.5.1.
3.2.2.13 Signal transmission subsystem (STS). The STS shall comply with
the requirements of MIL-D-81980. All STS component designs shall be
acceptable to the procuring activity prior to installation or use in an
automated aircrew escape system (see 6.2.2.). Where feasible, components
previously qualified and released for service use shall be used in preference
to developing and qualifying new components. Procuring activity approval
shall be obtained for the development and qualification of new components
(see 6.2.2).
3.2.2.13.1 Ballistics. Ballistic components designed as part of a signal
transmission system designed in accordance with 3.1.8.
3.2.2.13.2 Transmission lines. Transmission lines (hoses or tubing,
detonating cord, electric wiring, and deflagration cord) shall be used to
provide the means for routing signal(s) between STS components. Detonating
cord, deflagration cord, and linear shaped charges shall be designed in
accordance with the requirements of MIL-D-21625 and 3.1.8.5.
3.2.2.13.2.1 Ballistic hoses and fittings. Ballistic hoses and fittings
shall be selected and designed in accordance with NAVAIR 01-1A-20 to ensure
reliable, consistent transmission (without loss of subsystem or component
integrity) at normal operating pressures and temperature. Ballistic hoses,
fittings, and components shall be located and routed or shielded to:
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