Originally Posted by
IAN-UK
IB for inbound (I'm guessing) should be spiked.
It joins LH for longhaul as abbreviations more easily recognised in these pages as the IATA codes of major airlines
MH could be medium haul, while AF can refer to the annual fee on a credit card.
Don't television ads for medicines use IB for irritable bowel (syndrome)?
Also, on FT I always write USA for the country to avoid confusion with US the airline.