Reading other posts, it seems that a flight at a 9000 level flight number is a charter, but, chartering fedex, and doing big loops? Doesn’t make sense to me.
I looked for new reports on it in Greensboro, and MEM, but nothing. Anything could help. Thanks!
Piedmont Triad (KGSO) has a rather large maintenance activity, TIMCO (Triad International Maintenance Company). Im sure you can see quite a few maintenance flights out of there.