How do our instructors of PoA keep up with the various endorsements and sign offs they give to their students? A simple paper logbook? A simple word processing or spreadsheet file? For those wondering what I'm inquiring about...... § 61.189 Flight instructor records. (a) A flight instructor must sign the logbook of each person to whom that instructor has given flight training or ground training. (b) A flight instructor must maintain a record in a logbook or a separate document that contains the following: (1) The name of each person whose logbook that instructor has endorsed for solo flight privileges, and the date of the endorsement; and (2) The name of each person that instructor has endorsed for a knowledge test or practical test, and the record shall also indicate the kind of test, the date, and the results. (c) Each flight instructor must retain the records required by this section for at least 3 years.