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Window/ Hatch Internal Jettison Handle/ Initiator.- Three window/ hatch internal jettison handle/ initiators (internal jettison initiators) are located in the crew compartment: one at the eyebrow panel and one each at the TACCO and SENSO instrument panels. The internal canopy/ hatch severance initiators (fig. 6-9) are the squeeze-to-pull type, which have a quick-release safety pin in the squeeze segment of the opera-tion for safetying. The pilot's/ copilot's handle will blow all windows and hatches, whereas the TACCO and SENSO handles will blow only the hatch above the crew member. The basic internal jettison handle initiators are similar to the external jettison handle initiators except for the handle and the absence of the lanyard feature. Pilot/ NFO Window Severance Linear Shaped Charge.- A window severance explosive charge (fig. 6-10) is attached to the inside periphery of the pilot's and copilot's windows. An SMDC connects to a transfer block at the lower front corner of the explosive charge. The window explosive charge is actuated by the pilot's/ copilot's internal jettison handle/ initiator or by either external jettison handle/ initiators through the SMDC segments. The explosive charge acts as the cutting device for the window glass. Hatch Severance Explosive Charge.- The hatch severance explosive charge is similar to the window severance explosive charge. The explosive charges of the hatches can be actuated by the external jettison handle/ initiators or by the pilot's/ copilot's handle/ initiator. The TACCO or SENSO hatch explosive charge can be actuated individually by the respective TACCO or SENSO handle/ initiator. Fillet and Fillet Support Explosive Shaped Charge.- Each right and left upper wing-to-fuselage fillet has a fillet-severance, explosive shaped charge attached near the outer and rear fillet attachments (fig. 6-11). The shape charge cuts the attached fillet from the aircraft to allow complete egress of the respective hatch. A fillet
Figure 6-11.- Fillet and fillet support explosive shaped charge. support is cut by a second shaped charge attached at the bottom.
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