Check List for Avro York with Merlin 22/24 Engines

On Entry

Turn Ground/Flight switch to Flight.

Check batteries – voltmeter should read 24 volts.

Check fuel contents.

Ground starter battery available? Plug in and switch battery to Ground.

Starting Engines

Engine Fuel cocks ON.

Throttles cracked.

Prop controls fully forward.

Fuel tank selector cocks to No 1 Tanks.

Magnetos to ON.

Ignition to ON.

Press Starter button; release starter button if turning period exceeds 20 seconds. Wait 30 seconds before restart.

When all engines are running turn battery switch to FLIGHT.

Open up each engine to 1200 rpm and warm up at this speed.

Engine Testing

After warming up, open throttle to 1500 rpm, switch each magneto from on to off quickly; during the ‘Off’ phase rpm should drop slightly, recovering when the magneto is turned on.

Open up to zero boost; check operation of constant speed prop. With the control back to the 0% position rpm should fall to 1800.

Open the throttle to the take off position (fully forward) and check boost is correct and rpm is 3000.

Engine Minima for Taxi and Take off.

Oil – 15 degs C, Radiator coolant – 60 degs C. Oil Pressure at least 30 psi and rising.