1. After aircraft is properly located, place
position. Place padded work stand or other suitable
nose wheel in centered position. Head aircraft into the
support under the aft fuselage tiedown position and
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
7. Place control surfaces in locked position
considered to be satisfactory. Locate each aircraft at
and trim tab controls in neutral position. Place wing
slightly more than wing span distance from all other
flaps in up position.
aircraft. Position nose mooring point approximately 3 to
5 feet downwind from ground mooring anchors.
8. The requirements for dust excluders,
protective covers, and taping of openings will be left to
2. Deflate nose wheel shock strut to within
the discretion of the responsible maintenance officer or
3/4 inch of its fully deflated position.
3. Fill all fuel tanks to capacity, if time
4. Place wheel chocks fore and aft of main
10. Disconnect battery.
gear wheels and nose wheel. Tie each pair of chocks
(wood) 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
conditions exist, it is well to
parking brake as applicable.
remember that the storm appears to
pass two times, each time with a
5. Accomplish aircraft tiedown by utilizing
different wind direction. This will
necessitate turning the aircraft after
aircraft cable, using two wire rope clips, or bolts, and a
the first passing.
chain tested for a 3000 pound pull. Attach tiedowns so
as to remove all slack. (Use a 3/4-inch or larger manila
11. During typhoon or hurricane wind
rope if cable or chain tiedown is not available). If rope is
conditions, mooring security can be further increased by
used for tiedown, use anti-slip knots, such as bowline
placing sandbags along the wings to break up the
knot, rather than slip knots. In the event tiedown rings
aerodynamic flow of air over the wing, thereby reducing
are not available on hard surfaced areas, move aircraft
the lift being applied against the mooring by the wind.
to an area where portable tiedowns can be used. When
anchor kits are not available, use metal stakes or dead-
12. After high winds, inspect aircraft for visible
man type anchors, providing they can successfully
signs of structural damage and for evidence of damage
sustain a minimum pull of 3000 pounds.
from flying objects.
Service nose shock strut and
6. In event nose position tiedown is
considered to be of doubtful security due to existing soil
condition, drive additional anchor rods at nose tiedown