Cessna 152 - Electrical Fire; Stalling and Spinning

CESSNA 152 TRAINING MANUAL
 In flight:
● Mixture – IDLE CUT-OFF;
● Fuel valve – OFF;
● Throttle – FULLY OPEN;
● Master switch – OFF;
● Cabin Heat and Air – OFF (To prevent the fire to be drawn into
the cockpit);
● Airspeed – 85kts If the fire is not extinguished, increase to a
glide speed which may extinguish the fire;
● Forced landing – EXECUTE.
Electrical Fire
The indication of an electrical fire is usually the distinct odour of burning
insulation. Once an electrical fire is detected, attempt to identify the effected
circuit and equipment. If the affected circuit cannot be identified or isolated,
switch the master switch off, thus removing the possible source of the fire.
If the affected circuit or equipment is identified, isolate the circuit by pulling
out the applicable circuit breaker and switching the equipment off.
Smoke may be removed by opening the windows and the cabin air control.
However, if the fire or smoke increases, the windows and cabin air control
should be closed.
The fire extinguisher may be used, if required.
Ventilate the cockpit after that to remove the gases.
Landing should be initiated as soon as practical on the first suitable airfield.
If the fire cannot be extinguished, land as soon as possible.
Stalling and Spinning
There is no pronounced aerodynamic stall warning (buffet). Stall warning is
indicated by a steady audible signal 10 kts before the actual stall is reached
and remains on until the flight attitude is changed. The stall characteristics are
conventional for flaps retracted and extended. Slight elevator buffeting may
occur just before the stall with flaps down.
Spin characteristics are normal. To enter the spin, full rudder should be applied
about 10kts before stall and stick held fully back. A positive wing drop may
occur if the aircraft is unbalanced or can be induced by the use of partial power
at the entry.
The throttle should be closed on spin entry.
Intentional spins with flaps extended are prohibited, this is mainly because the
high speed which may occur during recovery is potentially damaging to the
flaps/wing structure.
by D. Bruckert & O. Roud © 2004 Page 96