To release the parking brakes push in on the
parking brake handle.
The control lock (fig. 2-19) holds the engine and
propeller control levers in a secure position, and the elevator,
rudder, and aileron in neutral position. Install the control locks
With engine and propeller control levers in
secure position, slide lock onto control pedestal
to prevent operation of levers.
Install elevator and aileron lockpin vertically
through pilot's control column to lock control
Install rudder lock pin through flapper door
forward of pilot's seat, making sure rudder is in
Reverse steps1 through 3 above to remove
control lock. Store control lock.
2-104. INSTALLATION OF PROTECTIVE COVERS.
The crew will insure that the aircraft protective covers are
The aircraft is moored to insure its immovability,
protection, and security under various weather conditions. The
following paragraphs give, in detail, the instructions for proper
mooring of the aircraft.
Mooring Provisions. Mooring points (fig. 2-34) are
provided beneath the wings and tail. Additional mooring
cables may be attached to each landing gear. General mooring
equipment and procedures necessary to moor the aircraft, in
addition to the following, are given in TM 55-1500-204-25/1.
Use mooring cables of 1/4 inch diameter
aircraft cable and clamp (clip-wire rope), chain or rope 3/8 inch
diameter or larger. Length of the cable or rope will be
dependent upon existing circumstances. Allow sufficient slack
in ropes, chains, or cable to compensate for tightening action
due to moisture absorption of rope or thermal contraction of
cable or chain. Do not use slip knots. Use bowline knots to
secure aircraft to mooring stakes.
(2) Chock the wheels.
Mooring Procedures for High Winds. Structural
damage can occur from high velocity winds; therefore, if at all
possible, the aircraft should be moved to a safe weather area
when winds above 75 knots are expected. Moored aircraft
condition is shown in figure 2-34. If aircraft must be secured
use the following steps:
After aircraft is properly located, place nose
wheel in centered position. Head aircraft into
the wind, or as nearly so as is possible within
limits determined by locations of fixed mooring
rings. When necessary, a 45 degree variation of
direction is considered to be satisfactory.
Locate each aircraft at slightly more than wing
span distance from all other aircraft. Position
nose mooring point approximately 3 to 5 feet
down-wind from ground mooring anchors.
Deflate nose wheel shock strut to within 3/4
inch of its fully deflated position.
Fill all fuel tanks to capacity, if time permits.
Place wheel chocks fore and aft of main gear
wheels and nose wheel. Tie each pair of chocks
together with rope or join together with wooden
cleats nailed to chocks on either side of wheels.
Tie ice grip chocks together with rope. Use
sandbags in lieu of chocks when aircraft is
moored on steel mats. Set parking brake as
mooring points shown in figure 234. Make
tiedown with 1/4 inch aircraft cable, using two
wire rope clips or bolts, and a chain tested for a
3000 pound pull. Attach tiedowns so as to
remove all slack. (Use a 3/4-inch or larger
manila rope if cable or chain tiedown is not
available.) If rope is used for tiedown, use anti-
slip knots, such as bowline knot, rather than
slip knots. in the event tiedown rings are not
available on hard surfaced areas, move aircraft
to an area where portable tiedowns can be used.
Locate anchor rods at point shown in figure 2-
34. When anchor kits are not available, use
providing they can successfully sustain a
minimum pull of 3000 pounds.