HC Deb 18 March 1925 vol 181 c2260
63. Captain GARRO-JONES

asked the Secretary of State for Air whether he will seek to incorporate in international rules a minimum altitude at which passenger-carrying machines on the London-Paris service shall cross the English Channel?

Sir P. SASSOON

It is not practicable, owing to the variability of atmospheric conditions, to lay clown a minimum altitude below which aircraft must not fly when crossing the English Channel. I may add, however, that higher flying, that is. above rather than below the clouds, will be gradually promoted by the development of aircraft instruments to facilitate navigation in fog.

Captain GARRO-JONES

Is the hon. Gentleman not aware of the variability of atmospherical conditions which makes a minimum altitude necessary?

Sir P. SASSOON

All pilots prefer to fly above the clouds rather than below. Owing to the variability of the atmosphere it is not always possible to fly above the clouds.

Captain GARRO-JONES

Would it not be possible to fix a limit below which pilots must not fly?

Sir P. SASSOON

No.

Sir HARRY BRITTAIN

Would the hon. Gentleman arrange for aerial police-traps for pilots?