Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 700

SECTION 9 - SUPPLEMENTS
SUPPLEMENT 1
PERFORMANCE
STALL SPEED
Stall speed is not significantly affected by residual ice on unprotected
airplane surfaces. Stall speeds increase significantly with even small
accumulations on the wing leading edge.
The first 0.25 inch (6.35 mm) of ice accumulation on the wing leading
edges causes the most rapid increase in stall speed. Additional ice
accumulation on the wing leading edges results in a continued increase
in stall speed, although at a less rapid rate.
If pre-stall
oscillations are encountered, disengage autopilot
and reduce pitch attitude while increasing power to
Maximum Rated Setting. Promptly extend the flaps
to TO/APR to help stabilize the airplane. Increase
airspeed to 95 KIAS or greater before retracting
flaps. If the flaps are subsequently retracted,
maintain at least 10 KIAS above initial buffet.
PREFLIGHT PLANNING
Figure S1-1 may be used for estimation of enroute altitude capability in
icing conditions. After entering the chart with expected cruise weight
and ambient temperature at altitude and cruise altitude, the pilot may
plan the flight as follows:
AREA A: These altitudes should be available under most icing
conditions for prolonged periods of time.
AREA C: These altitudes will probably not be available after ice begins
to accrete on the airplane. Exiting the icing condition by climbing may
not be possible.
Exit strategies for icing conditions should be determined
during preflight planning.
S1-48 U.S.
(Continued)
WARNING
buffet or uncommanded
NOTE
CESSNA
MODEL 208B 867 SHP
GARMIN G1000
pitch
FAA APPROVED
208BPHCUS-S1-00