THRUSH S2R – G10 - 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 AIRCRAFT, INC – MODEL S2R-G10
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. Stripping of paint and repainting may be
necessary if control fails to be within limits.
WARNING!
FAILURE TO STAY WITHIN CONTROL SURFACES
STATIC BALANCE LIMITS COULD LEAD TO CONTROL
SURFACE FLUTTER, WHICH COULD LEAD TO LOSS
OF AIRCRAFT, LIFE, AND/OR PROPERTY.
TABLE 7-2: Static Balance Limits
“LOW SPEED
” RUDDER ASSY P/N 40226-100: POUND-INCHS OF IMBALANCE FROM
HINGE LINE, TRAILING EDGE HEAVY.
Note: Arm depends on where scale is placed. Be sure to measure.
INCH POUNDS
CONDITION MINIMUM MAXIMUM
MANUFACTURING 45 100
FIELD REPAIR 45 110
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.
POUND - INCHES
CONDITION MINIMUM MAXIMUM
MANUFACTURING 40 53
FIELD REPAIR 40 57
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
POUND - INCHES
CONDITION MINIMUM MAXIMUM
MANUFACTURING none 41.4
FIELD REPAIR none 45.0
For example, 21.1” x 1.96# = 41.4 #” (31.4 oz/16 = 1.96#)
Page Effective: 03/26/2010 7-30