Originally Posted by
beltway
Those are not the correct numbers. For one thing, you appear not to have selected UDU, as the numbers above are nominally for all upgrade types.
You're right; corrected.
Who knows how long 757s will last on that route. Wouldn't be at all surprised to see CO 738s being shifted into the mix, etc.
But maybe that time horizon doesn't really matter to the OP's decision.