Originally Posted by Brickfire

The youngest 757 is 19. There are many close-enough replacements. The 756 will be a shrinking category. Shrinking categories don’t lend themselves to seniority progression.

As to when and how (ie what bases) the 756 shrinks… hard to say. Not a this year or next year thing. But id be surprised if anyone hired today sees captain on it… especially not a line.