Optional Equipment
Cargo Hook Kit
CSP–520N–1
MD 520N (500N) ROTORCRAFT FLIGHT MANUAL
TM
Original
9–8
FAA Approved
PART IV
NORMAL PROCEDURES
Normal Operation:
Preflight
Place battery switch in BAT position and check that HOOK circuit
breaker is IN.
Push cargo load ring (D−ring or suitable substitute) into hook throat.
Cargo hook keeper should permit easy entrance into throat. Leave ring
in hook for remainder of operational checks (Ref. Figure 9−4).
Pull aft and downward on load ring; hook must remain in locked posi
tion.
Operational Checks
Check electrical and emergency operation of cargo hook release (Ref.
Figure 9−3).
Check operation of external release knob (located on left side of cargo
hook body).
HookDshouldDreturnDtoDtheDclosedDpositionDafterDabove checks.
Move pilot’s cyclic to all extreme positions. Cargo hook must remain
locked and external release knob must not rotate.
With load ring in cargo hook, swing hook to the limits of trav
elDinDallDdirections. HookDmustDremainDinDtheDclosed position.
Inflight
Check cargo HOOK circuit breaker IN.
Use care to avoid passing load attaching cables over landing gear
skid tube when attaching load to hook with helicopter on the
ground.
Apply collective smoothly when lifting cargo.
Activate cargo release switch on cyclic stick to release cargo.
CAUTION
