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|  MIL-S-18471G(AS)
f. Automatically bypass the initiation of vacant ejection seats
and previously ejected seats. Time delays of vacant and
previously ejected seats which are not required for proper
spatial sequencing of remaining occupied ejection seats
shall also be automatically eliminated from the subsystem
sequence.
Subsystem controls. Subsystem controls shall include:
3.2.2.11.1
A provision for the automatic initiation of the subsystem
a.
upon actuation at any time of any ejection seat firing
control handle at the pilot's station.
b. A manual command sequence control which shall provide the
pilot with the option of sharing subsystem initiation
capability with one additional aircrewmember station.
The additional aircrewmember station designation shall
be as provided by the aircraft detail specification or, in
the case of training aircraft, as provided in 3.2.2.11.1e.
c. A provision for automatic subsystem initiation upon
actuation of any ejection seat firing control handle at
the pilot or designated aircrewmember station during
any period of shared control.
d. Visual advisory signals, in accordance with MIL-STD-411,
at the pilot's station and at the designated aircrewmember's
station while command sequence control is being shared by
the two aircrewmember stations.
e. Controls which permit reversal of pilot and designated
aircrewmember stations so that the instructor pilot may
select either station as the pilot station in training
aircraft. The pilot-selected configuration shall comply
with subsystem retirements for pilot and designated
aircrewmember stations as specified in 3.2.2.11.
f. Ejection warning controls which are capable of activating
an ejection signal upon manual command at pilot and
designated aircrewmember stations. An ejection signal
shall be provided in accordance with MIL-STD-411.
g. A device or devices mounted either on the aircraft or the
ejection seat to meet the requirements of 3.2.2.11f for
bypassing vacant ejection seats and vacant ejection seat
time delays. If mounted on the aircraft, the device(s)
shall be integral with the manual command sequence control.
If mounted on the ejection seat, the device(s) shall be
integral with the ejection seat safety device of 3.2.2.16.
Each control shall perform throughout an installed life as required in accordance
with 3.4.2.1, based upon 12 complete cycles per flight.
3.2.2.12 Aircraft canopy and escape path clearance subsystem. The aircraft
canopy and escape path clearance subsystem shall ensure a suitably cleared
escape path for an ejecting aircrewmember and ejection seat combination. The
subsystem shall have a redundant primary mode, an automatic backup mode, and
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