HC Deb 18 March 1959 vol 602 c31W
67. Mr. Russell

asked the Minister of Transport and Civil Aviation if he is aware that at about 8.35 a.m. on 6th March a Boeing 707 aircraft passed over Wembley emitting paraffin or other oil from its engines; and to what extent under his regulations aircraft are allowed to eject fuel or oil of any kind except in emergency.

Mr. Hay

The aircraft was a Boeing 707 which landed at London Airport after a flight from New York. No fuel was jettisoned, but an increase in power while the aircraft was manoeuvring to land may possibly have caused incompletely burnt fuel to appear momentarily in the form of smoke or fine spray. The Air Navigation Order provides that aircraft may not jettison fuel except in emergency.