Cessna F.172H Skyhawk G-AVHH at Leeds-Bradford airfield.
This incident is mentioned in Yorkshire Air News. It states that the aircraft arrived at Leeds-Bradford on 5th August 1973. Over the night of 6th / 7th August 1973 it was parked and apparently tied down at Leeds-Bradford airfield but was still blown over in a strong wind which resulted in a damaged wing tip. The aircraft was registered to Nottingham Aviation Ltd, of Mansfield, Nottinghamshire at the time of this incident but was probably with Northair for some form of modification or alteration in August 1973.