correct as-is RTB Bingo fuel - AI does not always land at own airbase

[enmuenmu123123]

The plane lands not at its own airport, but on another runway.

[RedeyeStorm]

Has always been the case. With bingo the AI flys to the nearest neutral or friendly airfield. To prevent this you need to set all the airfields to either red or blue (if you are the mission author or can edit the mission). Then they will land on the nearest blue airfield.

[GumidekCZ]

Track needed, do you remeber?