Flight Control Static Balance Limits - Thrush Aircraft S2R-R1340 Maintenance Manual

THRUSH AIRCRAFT, INC – MODEL S2R-R1340

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.
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.
"LOW SPEED" RUDDER ASSY P/N 40226-100: POUND-INCHS OF IMBALANCE
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
CONDITION
MANUFACTURING
FIELD REPAIR
For example, 21.1" x 1.96# = 41.4 #" (31.4 oz/16 = 1.96#)
Effective: 01/01/08
AIRCRAFT MAINTENANCE MANUAL
WARNING!
TABLE 7-2: Static Balance Limits
FROM HINGE LINE, TRAILING EDGE HEAVY.
INCH POUNDS
CONDITION
MANUFACTURING
FIELD REPAIR
POUND - INCHES
CONDITION
MANUFACTURING
FIELD REPAIR
POUND - INCHES
MINIMUM MAXIMUM
45 100
45 110
MINIMUM MAXIMUM
40 53
40 57
MINIMUM MAXIMUM
none 41.4
none 45.0
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