Piper Comanche PA-24 Service Manual page 71

Jacking.
2-11.
The airplane is provided with a jack pad on each main spar just outboard of the main landing gear and
support position by making use of the tail skid. (Refer to Figure 2-9.) To jack the airplane, proceed as
follows:
a. Place the jacks under the jack pads.
CAUTION: BE SURE TO APPLY SUFFICIENT TAIL SUPPORT BALLAST: OTHERWISE THE
AIRPLANE WILL TIP FORWARD AND FALL ON THE FUSELAGE NOSE
SECTION.
b. Attach the tail support to the tail skid. Place approximately 400 pounds of ballast on the support to
hold the tail down.
c. Raise the jacks evenly until all three wheels clear the floor.
Weighing. (Refer to Figure 2-10.)
2-12.
a. Block the main gear oleo struts in their fully extended position and the nose gear at 2.50 inches
extension. Inflate all tires to the required pressures. (Refer to Table II-I.)
b. Place the aircraft on three individual scales by positioning a ramp of the same height as the scales
being used in front of each landing gear wheel. Position the scales in front of the ramps and tow the
aircraft onto the scales. (Refer to Paragraph 2-17 for towing procedures.) Remove the ramps so they
will not interfere with the scales. Level the aircraft per instructions given in Paragraph 2-13.
c. Proceed to weigh the aircraft in accordance with instructions given in the latest revision of AC
43.13-l.
04/01/09
PIPER COMANCHE SERVICE MANUAL
Figure 2-9. Jacking Arrangements
II - HANDLING AND SERVICING
1B23