The 737 Extreme Sound by TFDi Design is an accurate sound pack for the Boeing 737 NG series. This sound pack simulates realistic internal and external spool, real world buzzsaw/engine grind sounds, accurate battery and cockpit ambience noises, and immersive ground rolling sounds.

Also included is a custom sound gauge that can be added to any aircraft. The sound gauge adds GPWS altitude callouts, a 2D panel for controlling the air conditioning and crew notification sounds, and simulates the TOCWS.


  • High fidelity engine sound based on real world recordings
  • Quality cockpit ambience
  • Accurate seat belt chime (recorded from the real flight deck)
  • Full GPWS callouts simulation
  • Crew notification panel
  • Takeoff configuration warning system (TOCWS)
  • Thorough documentation