Definition
The Final Approach Fix is the published point on a non-precision instrument approach where the final approach segment begins. From the FAF, the pilot descends from the procedure's intermediate altitude toward the Minimum Descent Altitude (MDA) along the final approach course to the runway or missed approach point. On charts, the FAF is depicted by a Maltese cross.
Plain English
The Final Approach Fix is the spot in the sky where the last leg of the approach starts. Once you cross it, you begin your final descent toward the runway.
Context Anchor
Seen on instrument approach charts, especially in the profile view and plan view of an approach procedure.
Derivation
Final means last, approach means the path flown toward landing, and a fix is a known position in space identified by a navaid, GPS waypoint, or intersection. So the FAF is simply the last identified position before the runway from which the final descent is flown.
Why Pilots Care
It marks the point where the aircraft must be configured for landing and any altitude or speed limits apply.
Intuition Check
Do not read “fix” as something being repaired. In FAF, “fix” means a specific, identifiable point in space on the approach.
Example Sentence 1
Crossing the FAF, the pilot reduced power, extended the final flap setting, and began the descent toward the MDA.
Example Sentence 2
After passing the FAF the crew completed the landing checklist.