User manual

Table Of Contents
Section Part B
18 RUNAWAY PROPELLER
The indication of a ruaway propeller will be an unexpected and continuing increase in RPM
which cannot be contained by using RPM controls or reducing manifold pressure. This will
probably be accompanied by a sudden increase in noise from the now ungoverned engine.
Action required is :
Throttle
Speed
Propeller
Mixture
Feather Button
Gear/Floats
Mixture
Propeller
Throttle
Clean Up Checklist
Airspeed
Closed
Reduce immediately to 90 Kts
Affected Engine Minimum RPM
Affected Engine Idle Cut-off
Affected Engine Press and Confirm
Fx
Up or Coming Up
Live Engine Auto Rich
Live Engine Maximum RPM
Live Engine A/R for 90 Kts
Complete
Maintain 90 Kts
If the affected Propeller has feathered correctly the subsequent actions will be as for
engine failure during flight above safe attitude.
See Single Engine Cruise
If the Propeller does not feather then it must be determined whether the aircraft can stay
airborne, and for how long.
This will probably not be the case unless the aircraft is very light.
Whatever the outcome the situation is a desperate one due to the high power required
from the Live engine.
A forced landing or ditching must be expected and planned for whilst using all remaining
time to advantage, executing a diversion to the nearest airfield. See Forced Landing and
Ditching section xx
Rev No: 00 Stichting Catalina PH-PBY
Page: 16 18 May, 2004