The bit from the L1011 that got on the 330, was a fuel pump. both aircrafts use RB211 engines. the new engine they put on the 330 is shared by two other owners.
The mechanics could not use the pump form the sent out engine because it was already shipped and the spare engine did not have a pump, so they fitted a pump from a L1011 and fabricated
a piece of piping to fit in the connections on the 330; but ended up to close to somehing else and vibrations pierced the tubing some thirty od flight hours later, resulting in the now famous Atlantic Glider:
