Some years ago now a friend of mine got locked in the hold of a Bae 146 while tying down radioactive cargo. Being new to the job He thought it was a wind up until He felt the a/c push back. Lying on His back He started kicking the roof & yelling. As the a/c taxied a pax pressed the call button & told the cabin crew She thought she could hear someone banging underneath. The Hostie dismissed her concerns by saying it was just the a/c going over the joins in the concrete on the taxiway. The pax pressed the call button a second time & said "excuse Me dear but do the joins in the concrete go for f
ck sake let Me out"
friend spent next 3 days dodging tabloid journos