Page 377 - Transport
        P. 377
     29- Quota sale:
     Maximum number of seats by class, which can be sold
     in any transaction, without previous request from
     control office.
           F9 C9 Y9 M9 Q9 K9 V9 X9
            :
            This number is quota sale
Why do airlines do that?
    - Airlines do that to protect its business, because anybody can
      block the whole flight with only one entry.
                                        433





