Some experts have suggested that this policy allowed fuel to build up, making the 1988 fires worse.

I shut off the switches that allowed fuel to flow in through the probe, and allowed her to do the same.

Including the opening of a gap under the rear window, which allowed fuel to flow back into the driver's compartment.

The valve would not allow fuel to flow unless it was inserted into the fuel tank.

'They only allow smokeless fuel these days,' said Preston.

It declined and exited the fuselage behind the tail wheel to allow fuel dumping in an emergency.

When this is nearly burnt out, you turn the control key attached to the side of the burned to allow fuel through.

The Army was allowed enough fuel to go on manoeuvres.

The cause of the anomaly was traced to a leaky valve, which allowed fuel to leak during the coast between the first and second burns.

This allows unburned fuel to mix with post-combustion gases and be expelled.