TM 1-1510-225-10
2-134
Figure 2-46. Towing Turn Limits
2-100. PARKING.
Parking is defined as the normal condition under
which the aircraft will be secured while on the ground.
This condition may vary from the temporary expedient
of setting the parking brake and chocking the wheels
to the more elaborate mooring procedures described
under Mooring. The proper steps for securing the
aircraft must be based on the time the aircraft will be
left unattended, the aircraft weight, the expected wind
direction and velocity, and the anticipated availability
of ground and air crews for mooring and/or evacuation.
When practical, head the aircraft into the wind,
especially if strong winds are forecast or if it will be
necessary to leave the aircraft overnight. Set the
parking brake and chock the wheels securely.
Following engine shutdown, position and engage the
control locks.
NOTE
Cowlings and loose equipment will be
suitably secured at all times when left in an
unattended condition.
a. Parking Brake. The parking brake system
for the aircraft incorporates two lever-type valves, one
for each wheel brake. Both valves are closed
simultaneously by pulling out the parking brake
handle. Operate the parking brake as follows:
CAUTION
Do not set parking brakes when the brakes
are
hot
during
freezing
ambient
temperatures. Allow brakes to cool before
setting parking brakes.
1. Press both brakes.
2. Pull parking brake handle out. This will
cause the parking brake valves to lock the
hydraulic fluid under pressure in the
parking brake system, thereby retaining
braking action.
3. Release brake pedals.
4. To release the parking brakes push in on
the parking brake handle.
b. Control Lock. The control lock holds the
engine and propeller control levers in a secure
position. The elevator, rudder, and ailerons are
secured in a neutral position. Install the control locks
as follows:
1. With engine and propeller control levers in
secure position, slide lock around the
aligned control levers.
2. Install elevator and aileron lockpin through
pilot's control column to lock control
wheel.
