Editing Ground proximity warning system (section)

== Fast military aircraft ==
For fast military aircraft, the high speed and low altitude that may frequently be flown make traditional GPWS systems unsuitable, as the blind spot becomes the critical part. Thus, an enhanced system is required, taking inputs not only from the [[radar altimeter]], but also from [[inertial navigation system]] (INS), [[Global Positioning System]] (GPS), and [[Aircraft flight control system|flight control system]] (FCS), using these to accurately predict the flight path of the aircraft up to {{Convert|5|mi|km}} ahead. [[Computer cartography|Digital maps]] of terrain and obstacle features are then used to determine whether a collision is likely if the aircraft does not pull up at a given pre-set [[G-force|g-level]]. If a collision is predicted, a cockpit warning may be provided. This is the type of system deployed on aircraft such as the [[Eurofighter Typhoon]].<ref>[http://www.eurofighter.com/news/article61.asp Eurofighter Typhoon – BAE SYSTEMS delivers first Eurofighter Typhoon Ground Proximity Warning] {{webarchive |url=https://web.archive.org/web/20080203123456/http://www.eurofighter.com/news/article61.asp |date=February 3, 2008 }}</ref>  The U.S. FAA has also conducted a study about adapting 3-D military [[thrust vectoring]] to recover civil jetliners from catastrophes.<ref>"Multiaxis Thrust Vectoring Flight Control Vs Catastrophic Failure Prevention", Reports to U.S. Dept. of Transportation/FAA, Technical Center, ACD-210, FAA X88/0/6FA/921000/4104/T1706D, FAA Res. Benjamin Gal-Or, Grant-Award No: 94-G-24, CFDA, No. 20.108, December 26, 1994; "Vectored Propulsion, Supermanoeuvreability, and Robot Aircraft", by Benjamin Gal-Or, Springer Verlag, 1990, {{ISBN|0-387-97161-0}}, 3-540-97161-0.</ref>

On May 5, 2016, a military GPWS called [[Automatic Ground Collision Avoidance System]] (Auto-GCAS) equipped aboard an [[General Dynamics F-16 Fighting Falcon|F-16]] was activated after a trainee pilot lost consciousness from excessive G forces during basic fighter manoeuvre training. In an approximately 55 degree nose down attitude at {{convert|8,760|ft|m|abbr=on}} and a speed of {{convert|750|mph|km/h|abbr=on}}, the Auto-GCAS detected that the aircraft was going to strike the terrain and executed an automatic recovery, saving the pilot's life.<ref>{{cite web|url=https://aviationweek.com/defense-space/budget-policy-operations/auto-gcas-saves-unconscious-f-16-pilot-declassified-usaf|title=Auto-GCAS Saves Unconscious F-16 Pilot—Declassified USAF Footage|website=aviationweek.com}}</ref>