Originally Posted by
alanh
As for delivery flights, they may require circuitous routes or extra fuel to stay within reach of a suitable airport. Hawaiian Air's 717 had
extra tanks in the passenger cabin for their delivery.
I would be surprised if ETOPS rules applied for delivery flights (or more broadly, flights where no passengers are on board). The extra tanks certainly aren't used to satisfy ETOPS rules - they are there to provide enough fuel to reach the destination.