hkcanadaexpat wrote:gsg013 wrote:Can anyone explain why so many 757-S routes have been having unscheduled upgrades to 767 recently?
Pax demand to put it simply. The 763ER-low J fleet has 2 spares for the summer schedule. So when reliance is there and pax demand on JFK-LAX/SFO is high, its an easy sub. In some cases, its technical (ie 75W do go tech sometimes).
I would guess that the 75W is stretched and there’s spare 763 available has more to do with it. Reality is, most of these changes are fairly normal byproduct of the widebody fleet being stretched for the summer — e.g. DL plugs one hole (a severely delayed flight, an aircraft going tech.) with another until it can get caught up. Of course, to the average a.netter all they see is that an A332 was upgauged to an A333 and immediately assume it’s because that day’s flight must be performing really well, when often that’s not the case for the change - it’s just part of the chess game.
DL does the same thing with its narrowbody fleet. I remember when, a few years ago, DL’s mainline fleet was stretched thin and they kept a ratty, “officially” retired 757 around DTW as an operational spare. Didn’t matter if the flight was a 717 or 763 — that ratty 757 would sub for it. Had nothing to do with loads, just about getting the work done.