Amazing story on Aviation News International about a Cessna Citation Mustang that has been repaired after being heavily damaged - a collapsed fuel tank and two broken wing spars - on its delivery flight:
"The crew...heard a bang at 18,000 feet during the descent into AGC, which was followed by a left-engine low fuel pressure warning. They then noticed distortion on top of the left wing and heard a second bang. The crew continued the descent and landed safely at AGC.
FAA inspectors found that Cessna workers inadvertently blocked the left fuel tank vent with adhesive vinyl, which covered the Croatian registration numbers while the aircraft carried a temporary N-number. This blockage prevented the inflow of air to replace fuel drawn from the tank by the engines, and the tank deformed."