Northrop/McDonnell Douglas YF-23

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Northrop/McDonnell Douglas YF-23 ATF prototype
Type Fighter aircraft, Military aircraft, Prototype aircraft
Configuration Stealth aircraft, Trapezoidal wing aircraft
Propulsion Twinjet (Jet aircraft, Twin-engine aircraft)
Manufacturer Northrop, McDonnell Douglas
Author(s) Lee Elliott
--aircraft= YF-23
Status Beta
 Website The website for the Northrop/McDonnell Douglas YF-23 ATF prototype developments.
 Repository The development repository of the Northrop/McDonnell Douglas YF-23 ATF prototype.
Download Download the Northrop/McDonnell Douglas YF-23 ATF prototype aircraft package for the current stable release (2020.3).
License GPLv2+

Warning! This aircraft has no engines in Flightgear.

The Northrop/McDonnell Douglas YF-23 was an American prototype fighter aircraft designed for the United States Air Force. The YF-23 was entered in Advanced Tactical Fighter competition but lost out to the Lockheed YF-22, which entered production as the F-22 Raptor.

Aircraft help

Key Function
d/f Retract/extend slats
j/k Decrease/increase spoilers

The canopy closes automaticaly when the parking brake is released.

Development status/Issues/Todo

YF-23 noseshot.jpg


  • no cockpit light at night visible
  • no aircraft light available
  • no jetstream visible
  • weapon bay doors can't be opened

3d Cockpit:

  • no cockpit light at night available
  • no rudder/stick control in 3d cockpit available
  • no ruder control pedals available
  • no switches and leverls available
  • no elevator trim control available
  • no cockpit instruments available
  • cockpit is not textured
  • cockpit window has no windscreen wipers


  • engine sound in cockpit does not differ from outside engine sound
  • engines can't be turned off
  • hud can't be turned off
  • when pressing the "f" and "k" key I can extend some sort of flaps (don't know the name of them) but I can't retract them back.
  • cockpit is open by default, but i don't know how to close it
    • Press shift-b
  • aircraft has the wrong elevation (approximately 20 meter above the runway) after pressing the reset key