Cessna 150K - Control Surface Balance Requirements

I
I
I
I
18-12
CONTROL SURFACE BALANCE REQUIREMENTS
NOTE
Unpainted values are not limits which must be met. They are given as guides, in order that the un-
balance of the control surface in the final aircraft configuration may be predicted. If the control sur-
face in the unpainted condition falls within the unpainted limit, the mechanic may feel confident that
the control surface will be acceptable after painting. However, if the surface in the unpainted condi-
tion exceeds the unpainted limit, the balance must be checked again after final painting to assure
that the control surface falls within the painted unbalance limit. Refer to GENERAL NOTES on sheet
3 for specific conditions.
DEFINITIONS:
UNDERBALANCE
is defined as the condition that exists when the control surface is trailing
edge heavy, and is symbolized by a plus (+).
OVERBALANCE is defined as the condition that exists when the control surface is leading
edge heavy, and is symbolized by a minus (-).
CONTROL: AILERON
PAINTED
(Inch-Pounds)
UNPAINTED (Inch-Pounds)
BALANCE LIMITS
BALANCE LIMITS
0.0 to + 8.94 (1969 MODELS)
0.0 to + 8. 58 (1969 MODELS)
0.0 to + 11. 31 (1970 MODELS AND ON)
0.0 to + 9.23 (1970 MODELS AND ON)
CONTROL: RUDDER
PAINTED (Inch-Pounds)
UNPAINTED (Inch-Pounds)
BALANCE LIMITS
BALANCE LIMITS
0.0 to + 6.00 (1969 MODELS)
0.0 to + 4.00 (1969 MODELS)
0.0 to + 9. 043 (1970 MODELS AND ON)
0.0 to + 7.00 (1970 MODELS AND ON)
CONTROL:
RIGHT ELEVATOR
PAINTED (Inch-Pounds)
UNPAINTED
(Inch-Pounds)
BALANCE LIMITS
BALANCE LIMITS
0.0 to + 13.31 (1969 MODELS)
0.0 to + 11. 88 (1969 MODELS)
0.0 to + 14.109 (1970 MODELS AND ON)
0.0 to + 11.88 (1970 MODELS AND ON)
CONTROL:
LEFT ELEVATOR
PAINTED (Inch-Pounds)
UNPAINTED
(Inch-Pounds)
BALANCE LIMITS BALANCE LIMITS
0.0 to + 13.29 (1969 MODELS)
0.0 to + 11. 86 (1969 MODELS)
0.0 to + 14.109 (1970 MODELS AND ON)
0.0 to + 11. 88 (1970 MODELS AND ON)
Figure 18-3. Control Surface Balancing (Sheet 5 of 5)
Change 1