Aye - I fly the 737 for a company without a tradition of intercom use - hence I boldly decided to try out the T-Bone in ear headset- in use since two months, I have only good things to report. Fits perfectly, you can still hear the other crew members, air con and wind noise is effectively reduced, you can even keep it in for the outside check. Not even mentioning the fantastic integrated mike! Thumbs up