MD Helicopters MD900 with PW206E, Руководство по эксплуатации самолета

Страница: 431 / 450

Optional Equipment
Rescue Hoist
CSP–900RFM206E–1
ROTORCRAFT FLIGHT MANUAL
MD900 With PW 206E
FAA Approved
Original
10–45
PART VII
SYSTEM DESCRIPTION
The hoist assembly consists of a cable drum that holds 245 feet of 3/16" in. spin
resistant cable, a fail safe load brake, 28 VDC electric motor, limit switches coupled
to the cable drum to control fully−extended and intermediate cable positions, and
redundant switches. The hoist installation is mounted to the airframe by a support
tube and strut assembly (Ref. Figure 10−18).
Hoist speed control is accomplished by a command applied to either the variable
speed switch on the hoist operator’s control pendant or the constant speed switch
located on the collective control module. With the load selection switch set at 250,
cable speed is 225 feet per minute. With the load selection switch set at 600, cable
speed is 100 feet per minute (Ref. Figure 10−16). If the load select switch is set
at 250 and the hoist load is above 250 LB, a flashing warning light will illuminate
and the hoist speed will automatically be reduced to 100 feet per minute.
The controller also passes cable position information from the hoist. This position
information is absolute and will continue to provide cable position information if
power is interrupted.
The pilot’s payout switch overrides the hoist operator. When the pilot operates the
payout switch, the hoist is automatically set to the 600 LB 100 feet per minute
mode.
Additional information pertaining to the hoist installation may be found in the
Breeze−Eastern Corp. manual TD−92−015.