Definition
The fix from which the final approach segment of a non-precision instrument approach begins. It is depicted on instrument approach charts by a Maltese cross symbol. On precision approaches, the equivalent point is the glideslope intercept altitude and is not formally called a Final Approach Fix.
Plain English
A specific point along an instrument approach where the final, straight-in descent toward the runway officially begins. Crossing this point means the aircraft is now committed to the last leg of the approach.
Context Anchor
Seen on instrument approach charts and used during instrument training, approach briefings, and radio instructions from air traffic control.
Derivation
A 'fix' in aviation means a defined geographic point in space, established by navigation references. Final Approach Fix simply names the fix that marks the start of the final approach segment.
Why Pilots Care
It signals the point at which the aircraft must be properly configured and stabilized for landing.
Intuition Check
Do not read fix as a repair. In aviation, a fix is a known position. The Final Approach Fix is not just any point near the runway; it is the specific charted point where the final approach segment begins.
Example Sentence 1
Crossing the Final Approach Fix, the pilot started the timer and began descent to the published minimums.
Example Sentence 2
The approach clearance included instructions to cross the final approach fix at 2,000 feet.