TM 55-1510-219-10
Figure 2-17. Control Locks
system. The system can be reset by pressing the ON
OFF switch on the pedestal to ON again.
c.
Aileron Trim Tab Control. The aileron trim tab
control, placarded AILERON TAB -LEFT, RIGHT, is on
the control pedestal and will adjust the left aileron trim tab
only (fig. 2-10). The amount of aileron tab deflection,
from a neutral setting, as indicted by a position arrow, is
relative only and is not in degrees. Full travel of the tab
control moves the trim tab 7-1/2 degrees up and down.
d.
Rudder Trim Tab Control. The rudder trim tab
control knob, placarded RUDDER TAB LEFT, RIGHT, is
on the control pedestal, and controls adjustment of the
rudder trim tab (fig. 2-10). The amount of rudder tab
deflection, in degrees from a neutral setting, is indicated
by a position arrow.
2-42. WING FLAPS.
The all-metal slot-type wing flaps are electrically
operated and consist of two sections for each wing.
These sections extend from the inboard end of each
aileron to the junction of the wing and fuselage. During
extension, or retraction, the flaps are operated as a single
unit, each section being actuated by a separate jackscrew
actuator. The actuators are driven through flexible shafts
by a single, reversible electric motor. Wing flap
movement is indicated in percent of travel by a flap
position indicator on the forward control pedestal. Full
flap extension and retraction time is approximately 11
seconds. The flap control switch is located on the control
pedestal. No emergency wing flap actuation system is
provided. With flaps extended beyond the APPROACH
position, the landing gear warning horn will sound, unless
the landing gear is down and locked. The circuit is
protected by a 20-ampere circuit breaker, placarded FLAP
MOTOR POWER, located on the overhead circuit breaker
panel (fig. 2-26).
a.
Wing Flap Control Switch. Flap operation is
controlled by a three-position switch with a flapshaped
handle on the control pedestal (fig. 2-10). The handle of
this switch is placarded FLAP and switch positions are
placarded: FLAP UP, APPROACH, and DOWN. The
amount of downward extension of the flaps is established
by position of the flap switch, and is as follows: UP 0%,
APPROACH 40%, and DOWN 100%. Limit switches,
mounted on the right inboard flap, control flap travel. The
flap control switch, limit switch, and relay circuits are
protected by a 5-ampere circuit breaker, placarded FLAP
CONTR located on the overhead circuit breaker panel
(fig. 2-26). Flap positions between UP and APPROACH
cannot be selected. For intermediate flap positions
between AP-
2-38
