Final approach

[4] In the United Kingdom, any approach of 4.5° or greater is defined as steep and requires special approval.

[6][7] United States TERPS (Terminal Instrument Procedures) specifies maximum glidepath angles/vertical descent angles for each aircraft approach category.

[12] Under ICAO, The FAF and FAP are two different concepts, representing potentially two different altitude-distance points from the MAPt for different approaches to the same runway.

However, the FAF and FAP share the same definition as being the point at which the final approach segment is commenced.

For example, in the United States, the final approach fix is marked on a NACO IAP by a lightning bolt symbol and on a Jeppesen terminal chart by the end of the glide slope path symbol.