Originally Posted by
seatacpilot
So most airlines work on "flow back" and while she may have sat in a passenger seat that's not how she's listed on the manifest. She would be listed as a non-operating crew member. Which is a no-go for consuming drinks.
3Cforme’s comment above says that isn’t the case for Delta FAs flying on Delta metal. In any case, the GA could’ve easily changed that FA’s listing from JSA to NRSA and assigning the occupied seat before closing out the flight.