Emergency Operation In Clouds - Cessna Grand Caravan 208B G1000 Manual

SECTION 3 CESSNA
EMERGENCY PROCEDURES MODEL 208B G1000
SMOKE AND FIRE
(Continued)
Engine fires originating in flight must be controlled as quickly as
possible in an attempt to prevent major structural damage. Immediately
shut off all fuel to the engine and shut down the engine. Close the cabin
heat firewall shutoff control and forward side vents to avoid drawing fire
into the cabin, open the overhead vents, extend 20° to FULL flaps and
slow down to 80-85 KIAS. This provides a positive cabin pressure in
relation to the engine compartment. An engine restart should not be
attempted.
An open foul weather window produces a low pressure in the cabin. To
avoid drawing the fire into the cabin, the foul weather window should be
kept closed.
A fire or smoke in the cabin should be controlled by identifying and
shutting down the faulty system. Smoke can be removed by opening
the cabin ventilation controls. When the smoke is intense, the pilot can
choose to expel the smoke through the foul weather window. The foul
weather window should be closed immediately if the fire becomes more
intense when the window is opened.
The initial indication of an electrical fire is usually the odor of burning
insulation. The checklist for this problem should result in elimination of
the fire.

EMERGENCY OPERATION IN CLOUDS

If the vacuum pump fails in flight, the standby attitude indicator will not
be accurate. The pilot must rely on the attitude and heading information
(from the AHRS) shown on the PFD indicators. With valid HDG or GPS/
NAV inputs, autopilot operation will not be affected.
If a single AHRS unit fails in flight (red X's shown through the PFD
attitude and heading indicators), the pilot must rely on the cros-side
AHRS for attitude and heading information.
The autopilot will not operate if a single AHRS unit fails. The pilot must
manually fly the airplane with crosside AHRS input. Refer to Section 7,
Airplane and Systems Description, for additional details on autopilot
operations.
The following instructions assume a dual AHRS failure and that the
pilot is not very proficient at instrument flying.
FAA APPROVED
208BPHBUS-01
3-36
U.S.