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Propeller Controls
4. The RPM control levers are mounted in a quadrant on the engine
controls pedestal, and vary the governed RPM from 3000 down to
1800.
5. The feathering pushbuttons are mounted to the right of the pilot’s
instrument panel. Amber warning lights are installed within the respective
feathering pushbuttons. Red engine fire warning lights are mounted
under the respective feathering pushbuttons. In the event of an engine
fire the amber and red warning lights will both illuminate.
Superchargers Control
6. The supercharger gear-change is electro-pneumatically operated
by a switch on the front panel immediately below the engine speed
indicators. The switch, which has two positions, MS and FS, controls all
four engines simultaneously and a red warning light beside it indicates
if FS gear is engaged when the main wheels are down. In the event of
electrical or pneumatic failure, the rams will stay at, or return to, the MS
gear position.
Radiator Shutters
7. The radiator shutters are controlled by two-position switches (marked
AUTOMATIC and SHUTTERS OPEN) and are mounted on the cockpit
right-hand wall. The shutters are operated automatically by a thermostat
when they are set to the AUTOMATIC position; when the switches are in
the OPEN position the thermostatic control is overriden, and this position
should be used for all ground running and taxying.
8. When the aircraft is parked, the
shutters should be left in the
AUTOMATIC position. If left in the OPEN position, they will close when
the electrical current is switched off, and open when it is switched on
again, with a consequent waste of pneumatic pressure.
Ignition and Starting Controls
9. The ignition switches, boost coil master switch and the starter
pushbuttons are all at the top centre of the front panel. The starter
pushbuttons operate the boost coils when the boost coil switch is ON.
UNCONTROLLED DOCUMENT - NOT FOR USE IN FLIGHT OR TO BE PRINTED
UNCONTROLLED DOCUMENT - NOT FOR USE IN FLIGHT OR TO BE PRINTED
