HC Deb 03 June 1931 vol 253 c189
18. Lieut.-Commander KENWORTHY

asked the Under-Secretary of State for Air whether any recent trials have been carried out with heavy oil engines in aeroplanes and seaplanes; if so, with what results; and whether any trials have been made with these engines in commercial machines?

The UNDER-SECRETARY of STATE for AIR (Mr. Montague)

No such experiments have yet been carried out by the Air Ministry nor, so far as I am aware, by any firm or private individual in this country.