What part(s) of 121 does UPS operate under? Domestic/Flag/Supplemental

Out of sheer curiosity.

FLAG I am almost sure

Flag/Domestic ... not Supplemental

Rules?? They don't need no stinking rules!! They operate under their own Brown Rules.

UPS can operate under all 3.

Charters are operated under Supplemental rules.

Yep, 31wins is exactly correct.

UPS can operate under Flag, Domestic and Supplemental. I didn't go deep enough in the Ops Specs to see that, ... pp13.

I stopped at "Ops Specs Flexibility" on pp7. Sorry.

That's fo sho!

As a former feeder pilot for Brown this statement gives me shivers. Never got how they thought an airplane needed to be surrounded by a hundred orange cones or how honking a gazillion times would accomplish anything!

It's a Brown universe! We're just living in it!