a Piper Arrow some years ago had problems with the oil inspection cover during pre flight checks - resulting in failing to close the flap down securely.
Consequently during the flight the flap sprung open - causing some alarm. The pilot attempted a swift landing at North Weald
Pasir
I remember a fatal accident at North Weald about 30 years ago when a PA 32 crashed near the new M11 (not open at the time) following a late overshoot from runway 20 because of some warning barriers left out on runway 31 (and across 20) by the Gliding Club from the day before. The accident happened very early in the morning before anyone was around.
If this is the same accident then I think you will find that the attempted landing was due to the front baggage locker door opening resulting in a reduced ability to climb over the higher ground and trees following the late go around.
Quite a different thing to an oil inspection panel opening...
UV