Originally Posted by
scorpion63
The Vixen incident was caused by the loss of a panel in the Stbd upper wing boom used to store tools, in this case the tools fell out after the panel departed the aircraft along with a roll of Kimwipe which fluttered to the ground gently unwinding! A relacement panel was robbed from a Vixen at Bruntingthorpe to enable the aircraft to fly back to Bournemouth.
I've seen a source that said that, too, but I thought that had been disputed in a previous post, which identified an existing hatch (rather than a panel) just behind the radome on the port side.
The fact that a replacement was sourced from another aircraft and fitted, albeit temporarily, would strongly suggest that it was something designed to open. Just not in flight.