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Cessna 208B - Ground Control; Wing Flap System

Cessna 208B
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CESSNA SECTION 7
MODEL 2088 (675 SHP) AIRPLANE AND SYSTEMS DESCRIPTION
GROUND CONTROL
Effective ground control while taxiing is accomplished through nose
wheel steering by using the rudder pedals; left rudder pedal to steer
left
and right rudder pedal to steer right. When a rudder pedal is
depressed, a spring-loaded steering
bungee (which is connected to the
nose gear and to the rudder bars) will turn the nose wheel through an
arc of approximately 15" each side of center. By applying either left or
I
right brake, the degree of turn may be increased up to 56" for Airplanes
2080001 thru 0403 not lncorporating
SK208-164 and Airplanes
20880001 thru 1223 not lncorporating
SK208-164. The degree of turn
may be increased
up
to 51.5" for Airplanes 2080001 thru 0403
lncorporating SK208-164, 2080404 and On,
208B0001 thru 1223
lncorporating
SK208-164, and Airplanes 208B1224 and On.
Moving the airplane by hand is most easily accomplished by attaching
a tow bar (stowed in aft cargo compartment) to the nose gear fork axle
holes. If a tow bar is not available, or pushing is required, use the wing
struts as push point?.. Do not use the propeller blades or spinner to
push or pull the airplane. If the airplane is to be towed by vehicle, never
turn the nose wheel beyond the steering limit marks either side of
center. On airplanes having serial numbers
208B0001 thru 20880054
which have been modified with
SK208-48 and airplanes with serial
numbers 20880055 and On, if excess force is exerted beyond the
turning limit, a red over-travel indicator block (frangible stop) will
fracture and the block, attached to a cable, will fall into view alongside
the nose strut. This should be checked routinely during preflight
inspection to prevent operation with a damaged nose gear.
The minimum turning radius of the airplane, using differential braking
and nose wheel steering during taxi, is as shown in Figure
7-7.
WING
FLAP
SYSTEM
The wing flaps are large span, single-slot type (see Figure 7-8) 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 flap 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 10" and 20"
=)
positions. For flap deflections greater than 1
OD,
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.
(Continued Next Page)
*,
='
1
Revision
23
U.S. 7-27

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