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Old Dec 5, 2012 | 2:09 pm
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mduell
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Originally Posted by tods27
So, why not just increase the number of flight numbers? Maybe Shares can only handle 1500 flight numbers . Is there some sort of FAA registration they need for additional flight numbers?
I suspect the limitation is the GDSs only allow 4 digits for flight number, so there's only 9999 flight numbers available to use.

4k for OAL codeshares, nearly 4k for express, a few hundred for charters, a few hundred for mx and test flights, some reposiitoning, and you're down to the ~1650 used by mainline.
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