To act as pilot in command, pilots must complete a flight review every 24 calendar months. A calendar month means that the endorsement runs to the end of the 24th month. For example,
if your flight review endorsement is dated March 15, 2013, you have 24 calendar months, or until March 31, 2015, to receive your next flight review. The logbook endorsement must be specifically for a flight review.
I certify that (First name, MI, Last name), (pilot certificate), (certificate #), has satisfactorily completed a flight review of 14 CFR 61.56(a) on (date).
S/S [date] Instructor's name, certificate number and date of expiration.
14 CFR 61.56 requires a minimum of one hour of flight training and one hour of ground training. The only specific requirement is a review of the current general operating and flight rules of 14 CFR Part 91 and, at the discretion of the person giving the flight review, those maneuvers and procedures necessary for the pilot to demonstrate the safe exercise of the privileges of the pilot certificate.