Official definition of "Mainline Aircraft"?

[SKYWRJGUY]

Anything anybody wants to fly when they move up to a carrier destined to enter bankruptcy.

 

[MECH]

A mainline aircraft is ANY aircraft that is operated for the parent brand. It does not matter if it is a 172, EMB-145, EMB170, B-737, A-380. If it is flying with AA, US, UAL, DAL, CAL passangers on board. Then it should be flown by that airlines pilots, period.


I know the above statement is not currently a reality. But as airline pilots we need to change this industry. Or we will all be working for Walmart wages before long.