Inlet duct runup screens may be left off during
taxiing to and from takeoff position when
requirements or existing conditions make the
use of screens impractical. Since specific
conditions warranting removal of screens as
specified above cannot be predetermined,
specific conditions may be determined by
each command as necessary to conduct their
operations. Approval of screen removal
should include any additional precautions
Use only nonmetallic-head hammers when
required to install parts on engine.
Safety Around Aircraft. The following safety
precautions shall be employed to ensure safety around
helicopters on the flightline.
Stand clear of plane-of-rotation of engine
cooling fan during operation.
Stand clear of tail rotor plane-of-rotation
Main rotor blades tend to droop at decreased
speeds, approach with caution, especially
blades with a low plane-of-rotation.
Personnel shall exercise extreme
propeller to keep their bodies as
Ground crew-members should be
accidental start may occur at any
time, and should therefore be alert to
jump clear in such an event. A
suitable length of canvas strap or
propeller blades to facilitate hand-
pulling. Be especially certain that
the ignition switch is in the OFF
position before turning propeller by
hand. Death or injury may otherwise
Parking and Mooring. The following instructions
are general in nature, and are applicable to Army
aircraft. For specific instructions on parking and
mooring particular aircraft, refer to the applicable
maintenance manual. The following are general
precautions for all aircraft.
Do not park or moor aircraft closer than wing
or rotor span, except by authority of the
When aircraft are to be parked in
rows, position aircraft in adjacent
rows to most effectively reduce
When possible, park aircraft in such a location
that transparent enclosures are not in direct
rays of sun.
Install gear locking devices (when applicable).
Attach mooring ropes to aircraft and
ground fittings at an angle of approximately
45 degrees. Attach mooring ropes and install
mooring devices as specified in applicable
Allow sufficient slack in the mooring
rope to prevent stress on ground
fittings, rope, mooring devices, or
aircraft structure due to tire or strut
Place fully charged, 50 pound carbon dioxide
type fire extinguishers in readily accessible
areas where aircraft are parked.
When aircraft are to be moored for storage,
they shall not be parked less than 750 feet
from center of nearest taxiway. Provide
servicing, fire lanes and taxiways.
All aircraft parked inside enclosures will be
grounded at all times.