PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 4
Nov 30/06
4F8
55-20-00
4. Balancing (See Control Surface Balancing, 55-00-00, and Figure 2.) (PIR-PPS50015, Rev. AC.)
WARNING: ALL CONTROL SURFACES THAT HAVE BEEN REPLACED, REPAINTED, OR REPAIRED
AS AUTHORIZED IN THIS MANUAL, MUST BE BALANCED BEFORE INSTALLATION.
To balance stabilator, assembly must be complete including trim tab, tab pushrod and end bearing,
stabilator tips and all attaching screws. Before balancing, tape trim tab in neutral position with a small
piece of tape. Place complete assembly on knife edge supports in a draft-free beam
perpendicular to hinge centerline. Do not place tool on trim tab. Calibrate tool as described in Control
Surface Balancing - Balancing Equipment, 55-00-00. Read scale when bubble level has been centered
by adjustment of movable weight and determine static balance limit. If static balance is not within limits
given in Figure 2, proceed as follows:
A. If the stabilator is out of limits on the leading edge heavy side, remove balance plates from the
mass balance weight until the static balance is within limits.
B. If stabilator is out of limits on trailing edge heavy side, add balance plates (4 Maximum) to mass
balance weight until static balance is within limits.
Balancing Stabilator
Figure 2
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