Falcon Flyer From United States of America, joined Jul 2000, 1316 posts, RR: 0
Reply 2, posted (10 years 2 weeks 3 days 1 hour ago) and read 2105 times:
Under FAR Part 135, a T is required in front of the tail number to identify the operation as a commercial flight. Only used by charter companies that don't have an ICAO call sign and 3 letter identifier. It's in the FARs and was seldom used prior to 9/11 but is more common now.
My definition of cool ? Not trying so hard to be cool.