On Fri, 3 May 2013 07:15:10 +0100, DAN wrote
(in article ):

What happened behind the cockpit?

A prop blade separated?


It's not a bug, it's a feature.

This aircraft was one of three Harrows converted in 1939 as tankers for
experiments with in-flight refuelling. The conversion included putting a
window in the fuselage so that the boffins could see what was going on.

See:

http://1000aircraftphotos.com/Contri...rempe/2725.htm