Quantcast Internal Canopy and Hatch Jettison Initiator

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INTERNAL CANOPY AND HATCH JETTISON INITIATOR

The internal initiator is used to actuate the canopy and hatch system without activating the ejection seat system. Three internal initiators are located in the S-3A aircraft crew compartment. One initiator is located in the overhead between the pilot and copilot. The other two are located at the TACCO and SENSO positions on the out-board side of each instrument panel (fig. 2-15). The initiator is a mechanically actuated sealed-in device containing a squeeze-to-pull type of han-dle (fig. 2-1 5), a mechanical firing mechanism, and a transfer booster assembly. The mechanical firing mechanism and transfer booster assembly are identical to those used in the external system.

Figure 2-15.- Internal canopy and hatch jettison initiator.

The firing mechanism is secured in the safe position by a safety pin that passes through the handle. The safety pin prevents the handle from being squeezed and pulled. When the initiator handle is squeezed and pulled for a distance of 0.75 inch, the firing pin separates from the sear pin. From this point, the sequence is identical to the external canopy and hatch jettison sequence.



 


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