WACO YMF F5 Series, Maintenance Manual

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WACO Classic Aircraft Corporation
YMF WACO F5 SERIES MAINTENANCE MANUAL
REVISION: H Page
12
of
33
RELEASED: 07/21/2017 PART NO. YMFAMM-1
Aileron and elevator controls should be secured with the aft seat belt and chocks used to properly block
the wheels.
5.3.4 MOORING
The airplane should be moored for immovability, security and protection. The following procedures should
be used for the proper mooring of the airplane.
(1) Head the airplane into the wind if possible.
(2) Immobilize the ailerons and elevators by looping the seat belt around the control stick and pulling it
snug.
(3) Block the wheels.
(4) Secure tie-down ropes to the wing tie-down rings and to the tail wheel fork at approximately 45
degree angles to the ground. When using rope of non-synthetic material, leave sufficient slack to
avoid damage to the airplane should the ropes contract.
CAUTION
Use bowline knots, square knots or locked slip knots.
Do not use plain slip knots.
NOTE
Additional preparation for high winds include using tie-
down ropes from the propeller shaft and securing the
rudder.
(5) Install a pitot head cover if available. Be sure to remove the pitot head cover before flight.
5.3.5 JACKING:
To raise the aircraft for landing gear servicing or weighing, jack point sockets are located just forward of
the main landing gear legs and access is attained by removing the small round covers in the lower
fairings. Insert the 5/8” jack point fitting into the socket and place the jack under it to hold it in place. The
jacks may be used individually for lifting one wheel or together when raising both wheels simultaneously.
The tail may be raised by jacking under the horizontal bushing located at the extreme aft end of the
fuselage under the tail post. On some aircraft it is necessary to remove the lower tail fairing to gain
access to the horizontal bushing.
WEIGHING THE AIRPLANE
The airplane is to be weighed in the level flight position. This necessitates an elevated platform on which
to rest the scale for the tail wheel. The airplane should be first brought onto the main wheel scales either
by jacking or rolling into position and then lifting the tail onto the elevated tail wheel scale. The airplane
must be leveled horizontally and should be as level laterally as practical. The horizontal leveling means is
the top longeron under the horizontal stabilizer (see Figs. 5-1, 5-2) and the rear cockpit floor can be used
to level laterally. Aircraft serial numbers F5C120 and up have leveling lugs located under the left
horizontal stabilizer. These can be accessed by temporarily replacing the two truss head machine screws
found there with screws of the same size but long enough to allow a leveling device to rest upon them
both (see Fig. 5-3).