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Airstairs  
User currently offlineRyan h From Australia, joined Aug 2001, 1548 posts, RR: 1
Posted (9 years 6 months 2 weeks 16 hours ago) and read 3524 times:

Do some 737s have built in airstairs? I thought DC-9s and 727s etc had them.


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South Australian Spotter
16 replies: All unread, jump to last
 
User currently offline727EMflyer From United States of America, joined Mar 2005, 547 posts, RR: 0
Reply 1, posted (9 years 6 months 2 weeks 16 hours ago) and read 3497 times:

You just posted a picture of one! The answer is yes. Some A320's have them too. There was a thread about this not too long ago, but I couldn't find it in the search. You don't hear much about them because of the proliferation of Jetways, and most are inoperable because the airliners choose not to maintain them (weight, money etc.).

User currently offlineSlamClick From United States of America, joined Nov 2003, 10062 posts, RR: 68
Reply 2, posted (9 years 6 months 2 weeks 16 hours ago) and read 3478 times:

Quoting 727EMflyer (Reply 1):
most are inoperable because the airliners choose not to maintain them (weight, money etc.).

Not just inoperable, but in most cases not installed at the factory. The space exists, the hard points and possible even wiring may be there, but the whole structure was left out.

Exception of course would be for those customers who know they are going to places without jetways, possibly even without boarding stairs.



Happiness is not seeing another trite Ste. Maarten photo all week long.
User currently offlineL-188 From United States of America, joined Jul 1999, 29800 posts, RR: 58
Reply 3, posted (9 years 6 months 2 weeks 14 hours ago) and read 3365 times:

Yes, depends if the airline spec'd for them.

Actually on the 737 there is the forward door that you see there, and then on combi aircraft there can be a door on the rear exit.

The doors function differently too. The one at the rear, the door is hindged at the bottom to form the top flight of stairs. As you can see on the forward door, it folds up and then retracts into the airframe below the door.



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User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 4, posted (9 years 6 months 2 weeks 7 hours ago) and read 3277 times:

Quoting L-188 (Reply 3):
Actually on the 737 there is the forward door that you see there, and then on combi aircraft there can be a door on the rear exit.

Unnecessary Complications in todays era.
 Smile

We used to have a lot of problems with the Sequencing circuit.
regds
MEL



Think of the brighter side!
User currently offlineSanthosh From India, joined Sep 2001, 545 posts, RR: 1
Reply 5, posted (9 years 6 months 2 weeks 4 hours ago) and read 3248 times:

Quoting HAWK21M (Reply 4):
We used to have a lot of problems with the Sequencing circuit.

Mel For what purpose is the sequencing circuit used there? Also where are the controls for extending and retracting the airstairs situated?

Regards
George



Happy Landing
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 6, posted (9 years 6 months 2 weeks 3 hours ago) and read 3235 times:

The Airstair on a B737 can be operated from Outside & from Inside provided Entry door is open by using 28vdc or 115vac.
There are Two optng systems involved Normal & Standby.
Standby is dc operated & has not safety swiches on the Handrails,hence if the Handrails are not stored properly it can lead to damage during retraction of the Airstair.
The Sequences involve Position/limit/sequence switches than allow each step to occur in sequence,starting from opening of the Airstair door to Extending of the Airstair.
The outside controls are below aft of the Air stair opening & the Inside control is above the Entry door cutout.
regds
MEL



Think of the brighter side!
User currently offline707CMF From France, joined Mar 2002, 4885 posts, RR: 29
Reply 7, posted (9 years 6 months 2 weeks 1 hour ago) and read 3225 times:

The question was asked some months ago, so I tried to snap a picture of those stairs being retracted :


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Cheers,

707


User currently offlineAmtrosie From United States of America, joined Jan 2005, 274 posts, RR: 0
Reply 8, posted (9 years 6 months 1 week 6 days 20 hours ago) and read 3156 times:

As stated 737's have them installed during initial build, only if the customer requests. The 737 I maintain did not have them as original equip., so we went to the desert and found us a set and installed them. I know 717 have all the provisions for them, it just differed as to the customer wanting to take on the additional wt. penalties of the installed equipment. Some carriers have them, but choose to deactivate them.

User currently offlineL-188 From United States of America, joined Jul 1999, 29800 posts, RR: 58
Reply 9, posted (9 years 6 months 1 week 6 days 19 hours ago) and read 3139 times:

Well here we go a photo of the rear airstair.


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Quoting HAWK21M (Reply 4):
Unnecessary Complications in todays era.

If may be complicated but I am sure in your neck of the woods there are places where having a plane that support itself is kind of handy.


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OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineCitationJet From United States of America, joined Mar 2003, 2438 posts, RR: 3
Reply 10, posted (9 years 6 months 1 week 6 days 18 hours ago) and read 3125 times:

You may find some more answers here:
http://www.airliners.net/discussions...eral_aviation/read.main/1957575/6/



Boeing Flown: 701,702,703;717;720;721,722;731,732,733,734,735,737,738,739;741,742,743,744,747SP;752,753;762,763;772,773.
User currently offlineAa757first From United States of America, joined Aug 2003, 3350 posts, RR: 8
Reply 11, posted (9 years 6 months 5 days 18 hours ago) and read 2947 times:

Why are the doors cracked as the stairs are being lowered?

Thanks,
AAndrew


User currently offlineIFIXCF6 From United States of America, joined Sep 2004, 108 posts, RR: 0
Reply 12, posted (9 years 6 months 5 days 15 hours ago) and read 2905 times:

Aa757first,

Would you want even the possibilty of a flight if they were not properly stowed prior to door closure? I'm speaking DC9 series stowing of the airstairs, it's just my guess, and I can't speak with regards to the 737.

Mike


User currently offlineAirbusA346 From United Kingdom, joined Dec 2004, 7437 posts, RR: 2
Reply 13, posted (9 years 6 months 5 days 7 hours ago) and read 2855 times:

This is the Airbus compartment

A321- Chute compartment - the black square under number 2 door.


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Tom.



Tom Walker '086' First Officer of a A318/A319 for Air Lambert - Hours Flown: 17 hour 05 minutes (last updated 24/12/05).
User currently offlineHAWK21M From India, joined Jan 2001, 31684 posts, RR: 56
Reply 14, posted (9 years 6 months 5 days 5 hours ago) and read 2842 times:


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The Aft Airstair is a different Mechanism compared to the Fwd one.Did Alaska have both Installed.
Loading a Pallet with a Forklift.How tough is it.
regds
MEL



Think of the brighter side!
User currently offlineL-188 From United States of America, joined Jul 1999, 29800 posts, RR: 58
Reply 15, posted (9 years 6 months 5 days 1 hour ago) and read 2823 times:

Technically no, but I do recall the BP and ARCO birds had them, Those where the airplanes owned by the oil companies that at the time Alaska provided the mx and ground support for.

I don't believe the -400's had them either, at least a few of the MD-80's did.

As far as the NG aircraft, those are before my time.



OBAMA-WORST PRESIDENT EVER....Even SKOORB would be better.
User currently offlineAmtrosie From United States of America, joined Jan 2005, 274 posts, RR: 0
Reply 16, posted (9 years 6 months 4 days 18 hours ago) and read 2808 times:

The 37's have sequencing too. Can not open/close airstairs unless L-1 door open. However you can with ground control handle.

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