'Kilfrost' antifreeze is applied to passenger plane, the inventor talks to a pilot.
Title reads: "Croydon".
Anti-icing paste for Aeroplanes tested at Croydon Aerodrome, Greater London.
Various shots of men in boiler suits applying coat of antifreeze on 'Horatius', an Imperial Airways passenger aeroplane.
C/U of inventor of anti-ice paste (named 'Kilfrost'), Mr. Halbert talking with airline pilot. The pilot explains how 'Kilfrost' used on his aeroplane prevented it from crashing when flying in bad weather.