Textron Cessna 172R, Руководство по эксплуатации для пилотов

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SECTION
3
EMERGENCY PROCEDURES
CESSNA
MODEL 172R
RECOVERY FROM SPIRAL DIVE
IN
THE CLOUDS
If a spiral is encountered in the clouds, proceed as follows:
1
.
Retard throttle
to
idle position.
2.
Stop the
turn
by using coordinated aileron and rudder control
to
align the symbolic airplane in the
turn
coordinator with the
horizon reference line.
3. Cautiously apply elevator back
pressure
to
slowly reduce the
airspeed
to 80 KIAS.
4. Adjust the elevator trim control
to
maintain an 80 KIAS glide.
5. Keep hands off the control wheel, using rudder control
to
hold
a straight heading.
6.
Clear engine occasionally, but avoid using
enough
power
to
disturb the trimmed glide.
7. Upon breaking out of clouds,
resume
normal cruising flight.
INADVERTENT FLIGHT INTO ICING CONDITIONS
|
Flight into icing conditions is prohibited and extremely
dangerous. An inadvertent
encounter
with these conditions
can
best
be handled using the checklist procedures. The best procedure, of
course,
is
to turn
back or change altitude
to
escape icing conditions.
During these
encounters,
an unexplained loss in engine speed
could be caused by ice blocking the air intake filter, or, in extremely
rare instances, ice completely blocking the fuel injection air
reference tubes. In either case, the throttle should be positioned
to
obtain
maximum RPM
(in
some instances, the throttle may need
to
be retarded for
maximum power). The mixture should then be
adjusted, as required,
to
obtain maximum RPM.
STATIC SOURCE BLOCKED
If
erroneous readings of the static source instruments (airspeed,
altimeter and vertical speed)
are suspected, the static pressure
lalternate
source valve should be pulled ON, thereby supplying static
pressure
to
these instruments from the cabin.
3-18
Revision 7
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