Tie aircraft down by utilizing mooring points
shown in figure 2-43. 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
bow- line 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 2-43.
When anchor kits are not available, use metal
stakes or dead- man type anchors, providing
they can success- fully sustain a minimum
pull of 3000 pounds.
In event nose position tiedown is considered
to be of doubtful security due to existing soil
condition, drive additional anchor rods at nose
tiedown position. Place padded work stand or
other suitable support under the aft fuselage
tiedown position and secure.
Place control surfaces in locked position and
trim tab controls in neutral position. Place
wing flaps in up position.
protective covers, and taping of openings will
be left to the discretion of the responsible
maintenance officer or the pilot of the
transient aircraft (fig. 2-41).
Secure propellers to prevent windmilling (fig.
During typhoon or hurricane wind conditions,
mooring security can be further increased by
placing sandbags along the wings to break up
the aerodynamic flow of air over the wing,
thereby reducing the lift being applied against
the mooring by the wind. The storm appears
to pass two times, each time with a different
wind direction. This will necessitate turning
the air- craft after the first passing.
After high winds, inspect aircraft for visible
signs of structural damage and for evidence
of damage from flying objects. Service nose
shock strut and reconnect battery.