Fantastic replacement sound sets for fsxs default airliners boeing 737 747 airbus a321 bombardier crj and the learjet install the new airliner sound sets to any aircraft a whole suite of improved ai traffic sounds which now have realistic startup shutdown spool up taxi takeoff and shut down sounds close your eyes and it will sound like a real airport all sound effects are custom made for inside and outside viewing positions stereo sound cones take advantage of the new sound featur