Originally Posted by
ernestnywang
That is what should be the case...I agree. If the endorsement box says something like "VLD ON AA/AB/AY... FLTS ONLY," it will be hard to later add MH in. However, if the endorsement box says "VLD ON ONEWORLD FLTS ONLY" and you happen to have a clueless agent, it may then be possible.
These are the endorsements from my last CX issued DONE3
ENDORSEMENTS : VALID ONEWORLD CARRIERES ONLY * SUBJ TO RFND CHRG * RFR
ONEWORLD RULE