Wing Flap System - Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual

CESSNA SECTION 7
MODEL 208B 867 SHP AIRPLANE AND SYSTEMS DESCRIPTION
GARMIN G1000

WING FLAP SYSTEM

The wing flaps are large span, single-slot type, refer to Figure 7-6, Wing
Flap System, and incorporate a trailing edge angle and leading edge
vortex generators to reduce stall speed and provide enhanced lateral
stability. The flaps are driven by an electric motor. They are extended or
retracted by positioning the WING FLAPS selector lever on the control
pedestal to the desired flap deflection position. The selector lever is
moved up or down in a slotted panel that provides mechanical stops at
the TO/APR position. For flap deflections greater than TO/APR, move
the selector lever to the right to clear the stop and position it as desired.
A scale and white-tipped pointer on the left side of the selector lever
provides a flap position indication. The wing flap system is protected by
a "pull-off" type circuit breaker, labeled FLAP MOTOR, on the left
sidewall switch and circuit breaker panel.
A standby system can be used to operate the flaps in the event the
primary system should malfunction. The standby system consists of a
standby motor, a guarded standby flap motor switch and a standby flap
motor up/down switch located on the overhead panel. Both switches
have guards which are safetied in the closed position, with breakable
copper wire.
The guarded STBY FLAP MOTOR switch has NORM and STBY
positions. The guarded NORM position of the switch permits operation
of the flaps using the control pedestal mounted selector; the STBY
position is used to disable the primary flap motor when the standby flap
motor system is operated.
The STBY FLAP MOTOR UP/DOWN switch has UP, center OFF and
DOWN positions. The switch is guarded in the center off position. To
operate the flaps with the standby system, lift the guard breaking safety
wire, and place the STBY FLAP MOTOR switch in STBY position; then,
lift the guard, breaking safety wire and actuate the STBY FLAP
MOTOR UP/DOWN switch momentarily to UP or DOWN, as desired.
Observe the flap position indicator to obtain the desired flap position.
Since the standby flap system does not have limit switches, actuation
of the STBY FLAP MOTOR UP/DOWN switch should be terminated
before the flaps reach full up or down travel. After actuation of the
standby flap motor system, switch guards should be resafetied to the
closed position by maintenance personnel when maintenance action is
accomplished. The standby flap system is protected by a "pull-off" type
circuit breaker, labeled STBY FLAP MOTOR, located on the left
sidewall switch and circuit breaker panel.
208BPHCUS-00 7-27
U.S.