Originally Posted by
Superguy
I think it's not an IDB if the weight and balance is on a RJ, but is an IDB if it's on a mainline flight.
Someone can correct me if I'm wrong.
I think it's the number of seats that counts, like what's IDB on an E190 isn't IDB on a Dash, but I don't have the numbers handy.
Also, paying customers will be put off the plane before crew if the crew is positioning for working a flight, because if the crew doesn't make their assigned work flight, no one flies.