In the Archives of War "Nightbombers" film it is estimated that over 2,400 bombers were rescued by the anti-fog system FIDO from crashing!

http://www.nzetc.org/tm/scholarly/tei-WH2-2RAF-c14.html


Of particular interest was the introduction at British airfields of the apparatus known as FIDO – the initials stood for ‘Fog Investiga- tion and Dispersal Operation’ – which was responsible for saving many valuable aircraft and lives. Petrol burners were installed at short intervals along a runway and around the perimeter of selected airfields, and when lit heated the air sufficiently to disperse the fog. After considerable experiment three main airfields which had served for some time as emergency landing grounds were so fitted; Carnaby, in Yorkshire, for the northern area; Manston, in Kent, for the southern region and for aircraft operating on the other side of the Channel; and Woodbridge, in Suffolk, for the benefit of the squadrons based in East Anglia. The lighted runway at each was some 3000 yards long and 250 yards wide and the latest navigational aids and systems of flying control were installed. By May 1945, 1200 aircraft had made landings at Woodbridge alone by the use of ‘Fido’.

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