71Zulu
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DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 1:39 am

Looks like DL 279, JFK-MEX is being diverted to MSY, anyone know why?

http://flightaware.com/live/flight/DAL279
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OPNLguy
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 3:14 am

Looks like an unscheduled stop moreso than a diversion. Just a guess, but given the fact that he's at FL280 and not any higher, that suggests to me that they're non-RVSM, probably due to something being deferred on the aircraft. (There are a number of items that, if deferred, prohibit one from flying in RVSM airspace, FL290 and above). Perhaps the stop on MSY is to swap aircraft another 757, or repair the item on the existing aircraft, either one of which would allow normal operation at FL290 or above. The fuel burn JFK-MEX non-stop at FL280 may be so much higher that they just need to make a fuel stop at MSY. Hard to say for sure, but it looks like the stop is somehow RVSM-related...
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Goldenshield
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 3:22 am

Quoting OPNLguy (Reply 1):
The fuel burn JFK-MEX non-stop at FL280 may be so much higher that they just need to make a fuel stop at MSY.

It's amazing the difference in burn between FL280 and FL320 sometimes.
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71Zulu
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 3:43 am

Thanks for the that explanation OPLNguy, never considered that. Don't think DL has any extra aircraft and especially 757's here so looks just like a fuel stop and then moving on since outbound flight plan already filed on the 752. Just touched down and didn't hear anything from the crew that gave any hint as to what may have been happening. We'll see when they depart.
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OPNLguy
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 4:28 am

Quoting Goldenshield (Reply 2):
It's amazing the difference in burn between FL280 and FL320 sometimes.

I hear you. If they head MSY-MEX at FL280, they would suggest they'll be headed back from MEX at FL270, so maybe another stop on the way back since it's just that much more fuel to get off the ground at hot-and-high MEX.

Quoting 71Zulu (Reply 3):
We'll see when they depart.

If flightaware shows them at FL280, you'll have your answer... If they didn't swap aircraft at MSY, there's also always the possibility that they shipped any needed parts/mechanics ATL-MSY to restore it to RVSM-capable before it departs for MEX....
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Tom in NO
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 4:31 am

Just watched his take off from one of my airport roofing projects.....the aircraft was N638DL, the 'Jerry-Bird' in the new livery. First time I'd seen one up close. He did fuel up while parked at gate 8D.

I did grab a couple pics with the digital...however, the patch cable is at home, so it'll be tomorrow before any pics can be loaded.

Tom at MSY (on the CrackBerry)
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71Zulu
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 4:55 am

Quoting OPNLguy (Reply 4):
If flightaware shows them at FL280, you'll have your answer...

Kind of moving around now, is flightaware is really accurate in this respect?

Quoting Tom in NO (Reply 5):
port roofing projects.....the aircraft was N638DL, the 'Jerry-Bird' in the new livery.

Good catch Tom, gotta be the first new livery in MSY right?
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OPNLguy
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 5:10 am

Quoting 71Zulu (Reply 6):
Kind of moving around now, is flightaware is really accurate in this respect?

It can spike an individual reading sometimes, but more often then not I've found it accurate overall...
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Goldenshield
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 6:26 am

Quoting OPNLguy (Reply 7):

It can spike an individual reading sometimes, but more often then not I've found it accurate overall...

I've come to the theory that the "spikes" are when the controllers put into the system an altitude change clearance, i.e.; "Decend and maintain FL280"; "Amend climb to FL250 for traffic."
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OPNLguy
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 6:29 am

Quoting Goldenshield (Reply 8):
I've come to the theory that the "spikes" are when the controllers put into the system an altitude change clearance, i.e.; "Decend and maintain FL280"; "Amend climb to FL250 for traffic."

Makes sense...
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N1120A
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RE: DL 279 JFK-MEX Diversion To MSY

Tue Aug 14, 2007 9:41 am

Quoting OPNLguy (Reply 4):

I hear you. If they head MSY-MEX at FL280, they would suggest they'll be headed back from MEX at FL270, so maybe another stop on the way back since it's just that much more fuel to get off the ground at hot-and-high MEX.



Quoting OPNLguy (Reply 4):

If flightaware shows them at FL280, you'll have your answer... If they didn't swap aircraft at MSY, there's also always the possibility that they shipped any needed parts/mechanics ATL-MSY to restore it to RVSM-capable before it departs for MEX....

I am betting they could have it fixed at MEX if need be, given that there are 757 operators there.
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