I See. I learned something today. Thank you very much for the information.

J.F.
"Bob Moore" wrote in message
46.128...
J.F. wrote

Why do you designate a B737 as a 733 and a B747 as a 741. Just
interested.

B-737-300 becomes 733, B-747-100 becomes 741. Only a limited number
of spaces for a/c type in the FAA/ATC computers.

Bob Moore