ENSTROM 280FX OPERATOR’S MANUAL
10-3-9
FAA Approved: Mar 26/12
Rev. 6
Report No. 28-AC-020
Feb 21/12
SECTION IV. NORMAL PROCEDURES
10-3-11. Preflight Operation Check
1. Check electrical release system.
a. Turn master switch on.
b. Place instrument panel cargo hook arming switch
(labeled ARMING SW CARGO HOOK) to the ON
position.
c. Place a load (3 lb minimum) on cargo hook beam.
d. Press the CAR SLING RLSE switch on pilot’s cyclic grip
and the beam will release. If the momentary release
switch is held in the ON position, the cargo hook beam
will not re-latch. After the switch is released, check to
see if beam automatically re-latches.
2. Check mechanical release system (emergency release).
a.
All
switches
OFF.
b. Place load (3 lb minimum) on cargo hook beam.
c. Activate emergency release by pulling the “T” handle
mounted on the pilot’s cyclic stick. Approximately 1.5
inches of travel is required to release the cargo hook
beam.
d. After load releases, push “T” handle in and check hook
beam for automatic re-latching.
10-3-12. Static Electricity Discharge
Provide ground crew with instructions as follows: Discharge
helicopter static electricity before attaching cargo by touching
the airframe with a ground wire, or if a metal sling is used,
the hook-up ring can be struck against the cargo hook. If
contact has been lost after initial grounding, the helicopter
should be electrically re-grounded and, if possible, contact
maintained until hook-up is completed.
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