b. The control lock (fig. 2-17) holds the engine and
propeller control levers in a secure position, and the
elevator, rudder, and aileron in neutral position. Install
the control locks as follows:
1. With engine and propeller control levers in
secure position, slide lock onto control
pedestal to prevent operation of levers.
2. Install elevator and aileron lockpin vertically
through pilot's control column to lock control
3. Install rudder lock pin through flapper door
forward to pilot's seat, making sure rudder is
in neutral position.
4. Reverse steps 1 through 3 above to remove
control lock. Store control lock.