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.
Cowlings and loose equipment will
be suitably secured at all times when
left in an unattended condition.
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
Depress both brakes.
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
Release brake pedals.
Do not set parking brakes when the
ambient temperatures. Allow brakes
to cool before setting parking brakes.
To release the parking brakes push in on the
parking brake handle.
The control lock (fig. 2-25) 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:
With engine and propeller control levers in
secure position, slide lock around the
aligned control levers.
Install elevator and aileron lockpin through
pilot's control column to lock control wheel.
Install rudder lock pin through floor
Figure 2-47. Towing Turn Limits