Balancing Equipment; Stabilator Balance Configuration - Piper PA-44-180 SEMINOLE Maintenance Manual

850
STABILATOR AND TAB
STATIC BALANCE LIMITS (IN. - LBS.)
LEADING
EDGE
HEAVY
-12

BALANCING EQUIPMENT.

The balancing must be done using a suitable tool capable of measuring unbalance in inch-pounds from the
center line of the control surface hinge line. A suggested tool configuration is shown in Chapter 91 . Other tool
configurations may be used, provided accuracy is maintained and recalibration capability is provided. The tool
shown may be calibrated by placing it on the control surface to be balanced with the balance points over the
control surface hinge center line and balance bar parallel to the cord line. Position the trailing edge support on
the tool to align the tool with the control surface cord line and secure it in this position. Remove the tool without
disturbing the trailing edge support and balance the tool by adding weight to the light end as required. (The
movable weight must be at the center line.) Place the tool on the control surface perpendicular to the hinge center
line as shown in Figure 55-2. Read the scale when the bubble level has been centered by
adjustment of the movable weight.
BALANCING STABILATOR. (Refer to Figure 55-2.)
Refer to Balancing Control Surfaces at the end of this chapter.
PIPER AIRCRAFT
PA - 4 4 - 1 8 0 / 1 8 0 T
AIRPLANE MAINTENANCE MANUAL
LEADING
EDGE
LIGHT
-37
TAPE TRIM TAB IN
NEUTRAL POSITION
Figure 55-2. Stabilator Balance Configuration
3B12
BALANCING TOOL
(REFER TO CHAPTER 91)
HOLDING FIXTURE
LEVEL SUPPORT
PPS50011-2
5 5 - 2 3 - 0 2
Page 55-03
Revised: May 15, 1989