Thanks.

Our revenue business class RTW ticket issued by AC, which includes Singapore Airlines, Lufthansa, and AC codeshare on a 2 class North American United Airlines plane, was issued as "C" class in all airlines - the agent is used to C being discount business class, for AC, and so the same letter code was used for the flight segments in all airlines.

For RTW business class tickets, one issue a seat in the first class cabin on a 2 cabin plane of UA - realizing that one can only book D class on UA - but non-discounted first class on such a plane is coded as "F" - then is a "D" seat a "discounted first class", or "discounted business class" seat, by UA's definition?

I have never heard of a "S" code on AC flights.

[This message has been edited by FlyerGoldII (edited 03-15-2002).]