When a medical pelican is assembled/landed at FOB, just like most medical vehicles, it pops up with a message saying the FOB has been resupplied. Since the amount of seats within the vehicle (or similar) is equivalent to the amount of FOB tickets gained, the Pelican shows up with the message but has no passenger seats. Therefore you will get messages such as the one below which pointless. Possibly remove the ability and/or the message showing up?