e.
Seat Belts. The pilot’s and copilot’s seats each con-tain a shoulder harness, seat belt, and a crotch strap con-nected to a common buckle assembly. All belts and straps have adjustment .ttings. The attachment buckle has a single-point release that will be common in con.guration on the pilots and copilots seats; they may be of the lift lever or rotary release con.guration, when the lanyard is pulled or the release is turned all belts and straps will release simultaneously.
2.10.2 Protective Armor. Armor protection is provided for the body of the pilot and copilot against 7.62 mm rounds from the side and from the back and below. Armored wings, attached to the cockpit interior, consist of a sliding panel at the outboard side of each seat. A release lever at the front of each panel permits sliding the panel aft to allow rapid entrance and exit, as well as freedom of movement for the seat occupant.
2.10.3 Medical Attendant Seats.
To enable emergency exit, keep center medical seat facing to rear, unless litter pans and/or ambulatory seats are in full up position.
Two forward facing seats (Figure 2-5), one on each side of the helicopter at the rear of the cabin and one rearward facing seat at the front of the cabin, are for the medical attendants. Each seat can be adjusted forward or rearward from it’s center position. Each seat has a complete lap belt and dual torso-restraint shoulder harness attached to a dual action rotary release buckle. The shoulder harness is con-nected to inertia reels on the seat back and bottom. This gives the wearer freedom to move about his station. The restraint system is equipped with a single action rotary release buckle with a guard. A release plate must be pressed to allow rotation of release, preventing inadvertent handle rotation from contact with equipment etc. The inertia reel lock control is replaced by a shorter push/pull manual lock-ing control. Push in and the inertia reel is manually locked in place. When the control is pulled out, the reel will lock on sudden pull.
2.10.4 Medical Attendant Seat Belt Operation.
1.
Extend shoulder strap and attach shoulder strap .ttings to buckle.
2.
Extend lap belt and place across body.
3.
Place lap belt .tting into buckle and make cer-tain of positive lock.
4.
Adjust lap belt tension adjustments and shoul-der strap adjustments for a comfortable .t.
Section II EMERGENCY EQUIPMENT
2.11 FIRE PROTECTION SYSTEMS.
Fire detection and .re extinguishing systems are in-stalled so that a .re may be detected and put out at either engine or the APU installation, without affecting the re-maining two. The engines and APU are monitored by in-frared radiation type sensing units, and protected by a main and reserve high-rate discharge type .re extinguisher in-stallation.
2.11.1 Fire Detection System. A detection system provides .re warning to the cockpit in case of .re in either main engine compartment or in the APU compartment. The system consists of .ve radiation-sensing .ame detectors, control ampli.ers, and a test panel. Two detectors are in-stalled in each main engine compartment and one detector is in the APU compartment (Figure 2-1). The .ame detec-
tors are solid-state photoconductive cells providing continu-ous volume optical surveillance of the monitored areas. In case of .re, the detectors react to the infrared radiation and send a signal to one of the three control ampli.ers which in turn signals the .re warning assembly lighting the proper T-handle (Figures 2-6 and 2-10). Also, the master FIRE warning lights will go on if a .re is detected (Figure 2-8). The detector system automatically resets itself, with warn-ing lights off, when the infrared radiation source ceases to emit.
2.11.2 Fire Detector Test Panel. A test switch on the FIRE DETR TEST panel on the upper console (Figure 2-6), when moved to positions 1 or 2, sends a test signal through the system to put on the .re warning lights and verify proper system operation to, but not including, the photo cells. The No. 1 TEST position lights #1 and #2 ENG EMER OFF T-handles and APU T-handle and checks all .rewall mounted detectors. The No. 2 TEST position lights #1 and # 2 ENG EMER OFF T-handle only, and checks all deck mounted detectors. The engines and APU are completely enclosed within their own .rewall compartment, thus reducing the possibility of a false .re warning from outside sources. Electrical power to operate the No. 1 and No. 2 detector system is by the dc essential bus through circuit breakers marked FIRE DET, NO. 1 ENG and NO. 2 ENG, respectively. Power to operate the APU detector system is by the battery bus through a circuit breaker marked APU FIRE DET.
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