User avatar
KPDX
Topic Author
Posts: 2379
Joined: Wed Dec 14, 2005 10:04 am

AS Flt.707 PHX-PDX On Flightaware

Wed Nov 28, 2007 2:50 am

Howdy guys. Just a simple question.

My sister is en route right now PHX-PDX in a AS MD-83, and they are over Nevada, but only flying at FL240 for a cruising alt, and going fairly slow compared to the intended speed.

Why are they flying so low?

http://i30.photobucket.com/albums/c326/KPDX/sophielflightphxpdx.jpg

KPDX  

[Edited 2007-11-27 18:51:44]
View my aviation videos on Youtube by searching for zildjiandrummr12
 
futurecaptain
Posts: 1918
Joined: Sat Sep 09, 2006 1:54 am

RE: AS Flt.707 PHX-PDX On Flightaware

Wed Nov 28, 2007 2:55 am

Looks like they may be trying to avoid some severe turbulence.

http://adds.aviationweather.gov/turbulence/

Click on the top left map for a close up.

[Edited 2007-11-27 18:57:32]
AirSO. ASpaceO. ASOnline. ASO.com ASO. ASO. ASO. ASO. ASO.
 
as739x
Posts: 5034
Joined: Tue Apr 15, 2003 7:23 am

RE: AS Flt.707 PHX-PDX On Flightaware

Wed Nov 28, 2007 4:34 am

Actually at FL240 it looks like it may have a 1 of the 2 packs inop. I can check the MEL board tomorrow. But I am not throwing away Futurecap's explanation. This morning I sent a few plane out on flight plan at multiple altitudes due to turbulence.

ASSFO
"Some pilots avoid storm cells and some play connect the dots!"
 
KELPkid
Posts: 5247
Joined: Wed Nov 02, 2005 5:33 am

RE: AS Flt.707 PHX-PDX On Flightaware

Wed Nov 28, 2007 4:42 am



Quoting KPDX (Thread starter):
Why are they flying so low?

Could also be the altitude with the most favorable winds aloft (sorry, no current medical, so I can't check DUATS for you  Sad ).
Celebrating the birth of KELPkidJR on August 5, 2009 :-)
 
futurecaptain
Posts: 1918
Joined: Sat Sep 09, 2006 1:54 am

RE: AS Flt.707 PHX-PDX On Flightaware

Wed Nov 28, 2007 5:33 am



Quoting KELPkid (Reply 3):
sorry, no current medical, so I can't check DUATS for you

You still have this...
http://adds.aviationweather.gov/winds/

Link near the top for official textual winds aloft.


And they appear to generally be out of the West / North West for most high altitudes.

Quoting AS739X (Reply 2):
Actually at FL240 it looks like it may have a 1 of the 2 packs inop

Check tomorrow to put this to rest.  Smile
AirSO. ASpaceO. ASOnline. ASO.com ASO. ASO. ASO. ASO. ASO.
 
AlexPorter
Posts: 1655
Joined: Mon Jan 16, 2006 11:10 am

RE: AS Flt.707 PHX-PDX On Flightaware

Wed Nov 28, 2007 5:43 am

Every so often a flight does this, like stays down around 250 or something like that. Usually it's turbulence or winds, but as mentioned it could be some sort of mechanical restriction.
Last Flight: SCX701 MSP-PHX B738 8Jan2008
 
User avatar
KPDX
Topic Author
Posts: 2379
Joined: Wed Dec 14, 2005 10:04 am

RE: AS Flt.707 PHX-PDX On Flightaware

Wed Nov 28, 2007 6:14 am



Quoting AS739X (Reply 2):
Actually at FL240 it looks like it may have a 1 of the 2 packs inop

What does that mean?
View my aviation videos on Youtube by searching for zildjiandrummr12
 
as739x
Posts: 5034
Joined: Tue Apr 15, 2003 7:23 am

RE: AS Flt.707 PHX-PDX On Flightaware

Wed Nov 28, 2007 3:15 pm



Quoting Futurecaptain (Reply 1):

Unless the "Pack" was fixed over night before I checked the a/c it was probably a weather related flightplan. So your probably correct that is was due to turbulence avoidance.

Quoting KPDX (Reply 6):

Airplanes have 2 "Packs" which are air cycle mechanisms that converts bleed air from the engines to help provide pressurization to the airplane cabin. If 1 of the 2 are not working, the plane has to stay at 24,000 or 25,000 feet in case it loses the second "Pack". From that altitude it can make it to a safe altitude (quick decent) in the time frame provided by the FAA.

ASSFO
"Some pilots avoid storm cells and some play connect the dots!"
 
HAL
Posts: 1750
Joined: Tue Jan 15, 2002 1:38 am

RE: AS Flt.707 PHX-PDX On Flightaware

Wed Nov 28, 2007 9:31 pm

I flew in to PHX from HNL last night, and there was extensive moderate to occasionally severe turbulence all over the southwest US from FL250 up. I'm not surprised they filed as 240 because of that. Yes, if they had a pack inop they would do the same, but last night was a rough one and I'm sure it was because of the bumps.

HAL
One smooth landing is skill. Two in a row is luck. Three in a row and someone is lying.

Popular Searches On Airliners.net

Top Photos of Last:   24 Hours  •  48 Hours  •  7 Days  •  30 Days  •  180 Days  •  365 Days  •  All Time

Military Aircraft Every type from fighters to helicopters from air forces around the globe

Classic Airliners Props and jets from the good old days

Flight Decks Views from inside the cockpit

Aircraft Cabins Passenger cabin shots showing seat arrangements as well as cargo aircraft interior

Cargo Aircraft Pictures of great freighter aircraft

Government Aircraft Aircraft flying government officials

Helicopters Our large helicopter section. Both military and civil versions

Blimps / Airships Everything from the Goodyear blimp to the Zeppelin

Night Photos Beautiful shots taken while the sun is below the horizon

Accidents Accident, incident and crash related photos

Air to Air Photos taken by airborne photographers of airborne aircraft

Special Paint Schemes Aircraft painted in beautiful and original liveries

Airport Overviews Airport overviews from the air or ground

Tails and Winglets Tail and Winglet closeups with beautiful airline logos