John From United States of America, joined Sep 1999, 1374 posts, RR: 5
Reply 1, posted (15 years 4 months 3 days 21 hours ago) and read 1372 times:
Let me clarify this for you. AL changed it's 2 letter code to US in 1989. It used to be the the designator for "Military Charter", who then changed their code to MC. Northwest never had the designator US. Although some of their aircraft registration #'s do reflect this. Perhaps you got the two mixed up. Hope this helps.
Prinair From United States of America, joined Dec 1999, 744 posts, RR: 2
Reply 2, posted (15 years 4 months 3 days 20 hours ago) and read 1356 times:
John is correct. US used to be the code for MAC (Military Airlift Command). When Transtar Airlines (formerly called Muse Air-MC) was shutdown by WN the code MC became available and MAC was willing to change their code to MC.That is how USAir (AL then from their AlleghenyAir days) got the code US.