Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 1288 / 1956

PAGE 2
Feb 28/07
6L8
57-50-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
C. Balancing (See Figure 2.)
To balance the aileron, the assembly must be complete, including the trim tab and all attaching
screws. Before balancing, bend the trim tab into its neutral position. Place the aileron assembly on
the knife edge supports in a draft free room with the beam perpendicular to the hinge centerline. Do
not place the tool on the trim tab. Calibrate the tool as described in Balancing Equipment, below.
Read the scale when the bubble level has been centered by adjustment of the movable weight and
determine the static balance limit (see Chart 1).
There is no adjustment provision for the ailerons.
2. Balancing Equipment
Balancing must be done using a suitable tool capable of measuring unbalance in inch-pounds from the
centerline of the control surface hinge pin. See the tool configuration in Figure 3. Other tool
configurations may be used if accuracy is maintained and recalibration capability is provided.
To use this tool:
A. Ensure that the control surface is in its final Flight configuration, static wicks, trim tabs, trim tab push
pull rod and control surface tip (as applicable) should be installed. The surface should be painted
and trim/servo tabs should be in the neutral position.
NOTE: Because paint is a considerable balance factor, it is recommended that existing paint be
removed prior to repainting a control surface.
B. Place hinge bolts through control surfaces and place control surface on a holding fixture.
C. Calibrate the tool.
(1) Avoiding rivets, place the balancing tool on the control surface with the tool’s hinge centerline
directly over the hinge line of the control surface.
(2) Adjust the movable trailing edge support to fit the width of the control surface. Tighten the set
screw on the trailing edge support.
(3) Adjust the trailing edge support vertically until the beam is parallel with the control surface
chord line.
(4) Remove the tool from the control surface and balance the tool itself by adding or removing nuts
or washers from the beam balancing bolt. When balancing the tool, the movable weight must
be at the bar’s hinge centerline.
D. After balancing the tool, reattach it to the control surface per Figures 2 and 3. Keep the beam
positioned 90° from the control surface hinge line.
E. Determine balance of control surface by sliding movable weight along the balance beam.
F. Read the scale when the bubble level has been centered. Multiply by three to determine inch-lbs.
(i.e. Since the movable weight weighs three (3) pounds, every inch it is moved from the center of the
beam equals three (3) inch-lbs of force.)