What regulation requires a flight instructor to sign a student's logbook? I don't mind addressing questions that are not clear...but you do have a copy of the regulation available to you, don't you? The regulation regarding the flight instructor is among the shortest and most direct there is.
If you'll visit 61.189(a), you'll read:
No where does it state, nor is it implied, that the instruction must be toward any certificate or rating. Your instructor may not provide any flight or ground instruction, without signing your logbook.
If you'll visit 61.189(a), you'll read:
A flight instructor must sign the logbook of each person to whom that instructor has given flight training or ground training.
No where does it state, nor is it implied, that the instruction must be toward any certificate or rating. Your instructor may not provide any flight or ground instruction, without signing your logbook.