B747 Problem
When I did my B747 course way back in 1971 we were told about a defect with an american airline. The B747 could have a cargo deck galley, accessed by a personnel and a cart lift. Defect the pilots wrote up was about the elevator. A lot of time was spent trying to find a defect in the elevators.
The defect was about the lift to the lower deck galley that was described as an elevator in the write up. Later on a directive came out to only describe the lift to the lower deck galley as a lift, and not an elevator.