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N910DE - Delta Shuttle MD-88  
User currently offlineCpos From United States of America, joined Feb 2006, 31 posts, RR: 0
Posted (8 years 5 months 1 day 22 hours ago) and read 3630 times:

Last month I was on a DL Shuttle flight from BOS to LGA. Prior to pushback, the cabin filled with what looked and smelled like steam from the AC. We evacuated the a/c without incident. The crew did a great job keeping everyone calm. The 50 or so passengers all exited through the jetway as we still had not finished our pushback.

Anyway, I have two questions.....

1) The captain came out to the gate and explained that in his years of flying the MD-88, he's never seen this happen. I guess some of the "Packs" in the air conditioning unit malfunctioned. This was the first flight out for this aircraft on that morning. They tryed restarting the engines and encountered the same results. Can someone please explain what he ment by "Packs."

2) Secondly, does anyone know where this plane is now. It was taken out of service at that point. I have flown three shuttle round trips since then and have not seen the aircraft in the rotation. N910DE.

14 replies: All unread, jump to last
 
User currently offlineBucky707 From United States of America, joined Aug 2000, 1028 posts, RR: 3
Reply 1, posted (8 years 5 months 1 day 22 hours ago) and read 3577 times:

Quoting Cpos (Thread starter):
Can someone please explain what he ment by "Packs."

the packs are air conditioning packs, a unit which takes bleed air off the engines, compresses it, then expands it, which causes cooling. This is the air which is pumped into the cabin to keep it cool and to pressurize. If it is too cold, bleed air direct from the engines is mixed in to warm up air supplied to the cabin.


User currently offlineWjcandee From United States of America, joined Jun 2000, 5105 posts, RR: 22
Reply 2, posted (8 years 5 months 1 day 21 hours ago) and read 3545 times:

Curious. I don't know why you would evacuate. If it looked like "steam" -- i.e. it came in with the force of a teakettle and dissapated quickly -- I have seen this literally fifty times in aircraft, including many times in the MD80. It happens (as does fog) when cold, dry air is blown into an environment of warm, moist air -- as it does when you open your fridge sometimes.

If it didn't dissipate, and instead filled the cabin with lingering, smoky, fog, then it could be the result of the ingestion by the a/c system of deicing fluid.

In any event, there was likely nothing substantially wrong with the aircraft.

Another decent civilian word as a definition of "air conditioning packs" is "heat exchanger". Same principle as that thing in the back of your refrigerator, but different design.

[Edited 2006-02-23 22:09:06]

User currently offlineMD88Captain From United States of America, joined Nov 2001, 1330 posts, RR: 20
Reply 3, posted (8 years 5 months 1 day 21 hours ago) and read 3545 times:

Pnematic Air Compressor System. Or something like that. I've had them fill the cabin with "fog" in high humidity conditions and I've had them send smoke if they overheat. That happened on the 727 all the time and on the MD88 very infequently - But it has happened to me.

User currently offlineCpos From United States of America, joined Feb 2006, 31 posts, RR: 0
Reply 4, posted (8 years 5 months 1 day 21 hours ago) and read 3468 times:

This was definately not just a fog. I was sitting in the second row and when I stood up, I could not see the back of the aircraft.

User currently offlineViasa From Switzerland, joined Jun 2005, 1870 posts, RR: 6
Reply 5, posted (8 years 5 months 1 day 21 hours ago) and read 3434 times:

This three MD-88 wear now Delta Shuttle titels: N908DE, N910DE and N915DE

User currently offlineSESGDL From United States of America, joined Jan 2001, 3466 posts, RR: 10
Reply 6, posted (8 years 5 months 1 day 20 hours ago) and read 3336 times:

Quoting Viasa (Reply 5):
This three MD-88 wear now Delta Shuttle titels: N908DE, N910DE and N915DE

Sorry, there are more than that though. There MD-88s wear Shuttle titles now:

N908DE
N910DE
N911DE
N913DE
N914DE
N915DE

There may very well be more, but these are the ones that I have seen pictures of. Can anyone from DL help out? Are N909DE and N912DE also in Shuttle colors now?

Jeremy


User currently offlineTinPusher007 From United States of America, joined Feb 2005, 970 posts, RR: 1
Reply 7, posted (8 years 5 months 1 day 14 hours ago) and read 3188 times:

Quoting Bucky707 (Reply 1):
the packs are air conditioning packs, a unit which takes bleed air off the engines, compresses it, then expands it, which causes cooling. This is the air which is pumped into the cabin to keep it cool and to pressurize. If it is too cold, bleed air direct from the engines is mixed in to warm up air supplied to the cabin.



Quoting MD88Captain (Reply 3):
Pnematic Air Compressor System.

Yea...shouldn't PACKS actually be PACS for Pneumatic Air Conditioning System? This was always my understanding of that acronym.



"Flying isn't inherently dangerous...but very unforgiving of carelessness, incapacity or neglect."
User currently offlineWjcandee From United States of America, joined Jun 2000, 5105 posts, RR: 22
Reply 8, posted (8 years 5 months 1 day 13 hours ago) and read 3126 times:

Quoting TinPusher007 (Reply 7):
Yea...shouldn't PACKS actually be PACS for Pneumatic Air Conditioning System? This was always my understanding of that acronym.

My 767 Flight Handbook calls them "packs" all the way through. The indicator lights above the "Pack Control Selectors" on the 757/767 overhead panels say "Pack Off". The handbook describes "packs" as "air cycle machines".

So...regardless of where the term came from initially, Boeing seems to regard the present-day term as "Pack".


User currently offlineDeltaL1011man From United States of America, joined Sep 2005, 9289 posts, RR: 14
Reply 9, posted (8 years 5 months 1 day 13 hours ago) and read 3118 times:

jeremy, i have the list of everything sent to me from DL TOC but its old (its show the 733 shuttles) but if i can ill see if my freind can tell me P.S. if anyone wants the list i can send it to you


yep.
User currently offlineSESGDL From United States of America, joined Jan 2001, 3466 posts, RR: 10
Reply 10, posted (8 years 5 months 1 day 12 hours ago) and read 3093 times:

Quoting DeltaL1011man (Reply 9):
jeremy, i have the list of everything sent to me from DL TOC but its old (its show the 733 shuttles) but if i can ill see if my freind can tell me P.S. if anyone wants the list i can send it to you

That would be great, thank you! If you need it, my email is j73198@yahoo.com

Thank you,

Jeremy


User currently offlineCVG2LGA From United States of America, joined Feb 2005, 630 posts, RR: 1
Reply 11, posted (8 years 5 months 1 day 12 hours ago) and read 3079 times:

Quoting SESGDL (Reply 6):
There may very well be more, but these are the ones that I have seen pictures of. Can anyone from DL help out? Are N909DE and N912DE also in Shuttle colors now?

N912DE is in shuttle scheme, I snapped a foto of it at CVG one day at work. I just thought it was neat to see that and hadn't heard about the conversion yet. Also later when I got on board it on the right side of the aircraft opposite of the rear galley all the seats were gone? I would think they were making on the dare I say it MRTC idea. Any ideas as to why the seats were gone? Also this was a regular ops out of CVG could you imagine telling the 8-12 pax, sorry we literally don't have seats for you? Or "You are seated in the hangar sir...we apologize for that.
Tchau
DA-



They don't call em' emergencies anymore. They call em' Patronies.
User currently offlineLH744 From Belgium, joined Oct 2001, 302 posts, RR: 0
Reply 12, posted (8 years 5 months 1 day 4 hours ago) and read 2978 times:

Hi,

N910DE is back shuttling between LGA and DCA, today recently
as flight DL 1940!

Cheers,

LH744


User currently offlineCVG2LGA From United States of America, joined Feb 2005, 630 posts, RR: 1
Reply 13, posted (8 years 5 months 16 hours ago) and read 2823 times:

Hey I saw this at work today DL N398DA is still in shuttle scheme. Can anyone tell me when they pulled the 738's off shuttle? How long would it take to schedule this in for a repaint?
Tchau
DA-



They don't call em' emergencies anymore. They call em' Patronies.
User currently offlineDALMD88 From United States of America, joined Jul 2000, 2533 posts, RR: 14
Reply 14, posted (8 years 5 months 10 hours ago) and read 2740 times:

All of the ex shuttle 738 are currently being moded with first class and the titles are being changed. It takes about four days to do it. The paint part only takes a few hours. They just paint over the old ones with a roller and then mask it and paint the new title.

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