If all automatic modes fail after the seat is ejected, the emergency release handle may be used for parachute deployment or seat and pilot separation. Operation of the emergency release handle overrides all automatic modes, but it should not normally be used above 14,000 feet. Upon actuation, mechanical linkage fires the seat and man separation initiator directing ballistic gas to the inertia reel strap guillotine. The guillotine severs two straps and releases the pilot's upper torso restraint. Ballistic gas also actuates both the WORD motor and drogue release assembly and the parachute container opener assembly. The personnel parachute assembly is

Figure 6-38.- Safe/ arm control assembly and link.

then deployed by the drogue and the WORD motor, depending upon airspeed at the time of manual override initiation.

SUBSYSTEMS

There are several functional subsystems of the Stencel SJU-8/ A ejection seat. The subsystems are described in the approximate order in which they operate in the ejection sequence.