Definition
The Final Approach Fix is the specific point on a non-precision instrument approach where the final approach segment begins. From the FAF, the aircraft descends along the published final approach path toward the runway or missed approach point. On approach charts, the FAF is depicted by a Maltese cross symbol.
Plain English
It is the marked point on an instrument approach where the pilot starts the final descent toward the runway. Before this point, the aircraft is being positioned for the approach; after it, the aircraft is committed to the final descent path.
Context Anchor
Seen on instrument approach charts and used during IFR approach briefings, descent planning, and final approach callouts.
Derivation
A 'fix' in aviation is a defined geographic point used for navigation, taken from the older sense of 'fixing' a position on a chart. 'Final approach' names the last segment before landing. Together: the fix that marks the start of the final segment.
Why Pilots Care
It is the point at which descent to the next lower altitude is authorized and obstacle clearance is assured for the remainder of the approach.
Intuition Check
“Fix” does not mean something being repaired here. It means a specific, known point in the air used for navigation.
Example Sentence 1
Crossing the FAF, the pilot started the timer and began the descent to the minimum descent altitude.
Example Sentence 2
The controller cleared the flight direct to the FAF for the ILS approach.