BFR
Flight Review (formerly Biennial Flight Review)
A flight review required every 24 calendar months for a pilot to act as PIC.
A Flight Review under FAR 61.56 is required for every pilot, every 24 calendar months, to act as pilot in command. The minimum is one hour of ground training and one hour of flight training, conducted by a CFI.
The review must cover the general operating and flight rules of FAR Part 91, plus maneuvers and procedures the CFI judges necessary for safe exercise of the pilot's certificate. There's no pass/fail score — the CFI either signs the endorsement or recommends additional training.
"Biennial" is the colloquial term, retained from older versions of the regulation. The current rule uses "flight review." Some pilots still say BFR; both refer to the same requirement.
When it matters
Currency for the BFR is a hard gate for legal PIC. Most clubs and schools block scheduling for members whose BFR has lapsed.
In Aloft360
Pilot currency tracking