Do not set parking brakes when the brakes are hot during freezing ambient temperatures. Allow
brakes to cool before setting parking brakes.
4. To release the parking brakes push in on the parking brake handle.
b. The control lock (Fig. 2-30) 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 lock pin through the pilot s control column to lock control wheel. If inserted
from the top use extreme caution to avoid scratching the PFD glass.
3. Install rudder lock pin through loor-mounted door, forward of pilot s seat, making sure rudder is in the
4. Reverse steps 1 through 3 above to remove control lock. Stow the control lock.
2-106. INSTALLATION OF PROTECTIVE COVERS.
The crew will ensure that the aircraft protective covers are installed when leaving the aircraft.
The aircraft is moored to ensure its immovability, protection, and security under various weather conditions. The
following paragraphs give, in detail, the instructions for proper mooring of the aircraft.
a. Mooring Provisions. Mooring points (Fig. 2-48) 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 1-1500-204-23.
(1) Use mooring cables of 1/4 inch diameter aircraft cable and clamp (clip-wire rope), chain or rope (3/4
inch diameter or larger). Length of the cable or rope will be dependent upon existing circumstances. Allow
suficient 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 slipknots. Use bowline knots to secure aircraft to mooring stakes.
Chock the wheels.
b. 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 igure 2-48. If aircraft must be secured, use the following steps:
1. After aircraft is properly located, place nose wheel in centered position. Point the aircraft into the wind or
as nearly so as is possible within limits determined by locations of ixed mooring rings. When necessary,
a 45-degree variation of direction is considered to be satisfactory. Locate each aircraft at slightly more
than one wing span distance from all other aircraft. Position nose-mooring point approximately 3 to 5
feet downwind from ground mooring anchors.
2. Delate nose wheel shock strut to within 3/4 inch of its fully delated position.
3. Fill all fuel tanks to capacity if time permits.
4. 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 applicable.
5. Tie aircraft down by utilizing mooring points shown in igure 2-48. Make tie down with 1/4 inch aircraft
cable using two wire rope clips, or bolts and a chain tested for a 3000 pound pull. Attach tie downs so
as to remove all slack. Use a 3/4-inch or larger manila rope if cable or chain tie down is not available. If
rope is used for tie down, use anti-slip knots (such as bowline knot) rather than slip knots. In the event tie
down rings are not available on hard surfaced areas, move aircraft to an area where portable tie downs
can be used. Locate anchor rods at points shown in igure 2-48.
When anchor kits are not available, use metal stakes or dead man type anchors, providing they can
successfully sustain a minimum pull of 3000 pounds.