I was stationed at Tangmere in Jan 1954 when there was a flap one weekend.
A Comet was reported to have gone down in the English channel off the coast of France.
Despite it being a weekend with almost everyone stood down, 29 Sqn had four aircraft airborne within 30 minutes.
The search was fruitless, understandably, because subsequent information revealed that the Comet had crashed off Elba !
We were never told where or why the location cockup occurred.