Flight Control Static Balance Limits; For Example, 29" X 3.45# = 100 #" (55.2 Oz/16 = 3.45#); For Example, 16" X 3.31# = 53 #" (53 Oz/16 = 3.31#); For Example, 21.1" X 1.96# = 41.4 #" (31.4 Oz/16 = 1.96#) - THRUSH S2R – G10 Maintenance Manual

AIRCRAFT MAINTENANCE MANUAL

FLIGHT CONTROL STATIC BALANCE LIMITS

After repaint or repair of balanced control surfaces, they must be checked for proper balance
using the limits found in Table 7-2, below.
necessary if control fails to be within limits.
FAILURE TO STAY WITHIN CONTROL SURFACES
STATIC BALANCE LIMITS COULD LEAD TO CONTROL
SURFACE FLUTTER, WHICH COULD LEAD TO LOSS
"LOW SPEED" RUDDER ASSY P/N 40226-100: POUND-INCHS OF IMBALANCE FROM
Note: Arm depends on where scale is placed. Be sure to measure.

For example, 29" x 3.45# = 100 #" (55.2 oz/16 = 3.45#)

"LOW SPEED" ELEVATOR ASSY P/N 40058-505 "L/H" or -506 "R/H": POUND-INCHS
OF IMBALANCE FROM HINGE LINE, TRAILING EDGE HEAVY.

For example, 16" x 3.31# = 53 #" (53 oz/16 = 3.31#)

"LOW SPEED" AILERON ASSY P/N 52081-61 (left and right interchangeable): POUND-
INCHS OF IMBALANCE FROM HINGE LINE, TRAILING EDGE HEAVY

For example, 21.1" x 1.96# = 41.4 #" (31.4 oz/16 = 1.96#)

7-30
Page
THRUSH AIRCRAFT, INC – MODEL S2R-G10
WARNING!
OF AIRCRAFT, LIFE, AND/OR PROPERTY.
TABLE 7-2: Static Balance Limits
HINGE LINE, TRAILING EDGE HEAVY.
INCH POUNDS
CONDITION
MANUFACTURING
FIELD REPAIR
POUND - INCHES
CONDITION
MANUFACTURING
FIELD REPAIR
POUND - INCHES
CONDITION
MANUFACTURING
FIELD REPAIR
Stripping of paint and repainting may be
MINIMUM MAXIMUM
45 100
45 110
MINIMUM MAXIMUM
40 53
40 57
MINIMUM MAXIMUM
none 41.4
none 45.0
Effective: 03/26/2010