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Normal Airbridges Vs. Over-wing Airbridges (AMS)

Tue Oct 25, 2011 4:01 pm

One of the biggest drawbacks of the Boeing 757-300 was the time it took to plane and deplane at the airport due to its length and the single-aisle nature of the aircraft. This got me thinking of the design of the airbridges in Amsterdam where the second airbridge actually goes over the wing to serve door 4 of the 747. If such airbridges can serve the front and rear doors of the 757-300, it would probably solve the problem. Heck, if door 3 was full-size, it would be the best as catering can use door 4 at the same time.


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All this comes down to cost. Obviously, an over-wing airbridge would cost far more initial outlay but afterwards, are running costs (maintenance etc), similar? I'm going to go off in my fantasy world here but, *if* such gates were commonplace and *if* we get another long narrowbody design in the future, how much fuel will airlines save? The 757-300 is a good 30 tons lighter than the A300, which was built for similar missions.

Of course in a free-market world of privately run airports, the airport company would see no reason to build more expensive gates at the expense of MTOW-based landing fees...but it's great to imagine!
 
roseflyer
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Tue Oct 25, 2011 5:05 pm

There's an easy answer to your question. All an airline has to do is use air stairs and have passengers walk on the ramp to the back of the airplane. It's somewhat common place to use two doors on a narrowbody in quick turn operations and this is usually done by airlines loading from the ground with stairs. Complicated jetbridges to meet the aft door and avoid the rear stabilizer are far too complicated in my opinion. A good old fashion stair will work presuming the airport allows it and passengers are willing to walk outside.
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bohica
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Tue Oct 25, 2011 7:42 pm

I know this would take up a lot of ramp space but in the good ole days at some airports, a 707 or DC8 would park parallel to the terminal and a jetway would be used on the front and rear doors. Realistically though, I don't see it happening ever again.
 
Viscount724
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Wed Oct 26, 2011 1:00 am

Quoting bohica (Reply 2):
I know this would take up a lot of ramp space but in the good ole days at some airports, a 707 or DC8 would park parallel to the terminal and a jetway would be used on the front and rear doors.

That was common at ORD in the early years of jet service. Example below of TWA 707 with bridges connected to both front and rear doors.


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UA also had this group of gates at SFO in the 1960s with bridges to both front and rear doors. After their stretched DC-8-61s arrived I doubt they would have fit. The aircraft could taxi to and from these gates under their own power.

 
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BreninTW
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Wed Oct 26, 2011 5:34 am

Wasn't there a problem in DEN where an over-the-wing bridge gave way and damaged the wing of an aircraft?
 
Max Q
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Wed Oct 26, 2011 7:12 am

The over wing jet bridge does seem a good idea but outside AMS I haven't seen it.





Even in the picture above it doesn't appear that any of the rear airbridges are connected.
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kalvado
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Wed Oct 26, 2011 12:37 pm

WN uses (used) overwing airbridge at some airports - a least at ALB; and I had a chance to actually use it.
It was same intent of faster turnaround, but I believe it turned out not cost effective.
 
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tjwgrr
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Wed Oct 26, 2011 1:49 pm

Quoting Brenintw (Reply 4):
Wasn't there a problem in DEN where an over-the-wing bridge gave way and damaged the wing of an aircraft?

Yep- damaged a UAL 752.

United tested the over-wing bridges, but then ditched the project:

http://www.denverpost.com/business/ci_7324922
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bohica
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Wed Oct 26, 2011 5:11 pm

Quoting Max Q (Reply 5):
The over wing jet bridge does seem a good idea but outside AMS I haven't seen it.

They used to have them at the old terminal 4 in JFK. I never saw them in use though. They were removed when the terminal was rebuilt.

Quoting Max Q (Reply 5):
Even in the picture above it doesn't appear that any of the rear airbridges are connected.

It looks like one is connected to the plane on the far left.

Quoting Viscount724 (Reply 3):
UA also had this group of gates at SFO in the 1960s with bridges to both front and rear doors. After their stretched DC-8-61s arrived I doubt they would have fit. The aircraft could taxi to and from these gates under their own power.

I remember seeing that when I was a child in SFO. I looked in the database and sure enough they also parked the DC8-61 that way as well. I remember they had to tow the plane into the gate but they did power out.



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YXD172
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Thu Oct 27, 2011 1:33 am

Quoting RoseFlyer (Reply 1):
All an airline has to do is use air stairs and have passengers walk on the ramp to the back of the airplane

Or, there's always ARN's combination of over-the-wing airbridge to stairs (for use with the DC-9 and MD-80s). They were designed to end in stairs down to the ramp, allowing passengers a short walk to the tail door of the aircraft.

This is the best picture I can find of it, you can see the stairs (the grey-walled ones with little portholes) behind the 2nd-4th aircraft (I'm not sure if these are in use anymore)


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Photo © Daniel and Robert Fall

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c172akula
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Sat Oct 29, 2011 2:55 pm

Pier D at YYC had an overwing airbridge that WS tried out for a while. Don't know if it is still there or not. I should really look the next time I fly out of D.
 
YXD172
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RE: Normal Airbridges Vs. Over-wing Airbridges (AMS)

Wed Nov 02, 2011 12:02 pm

Quoting C172Akula (Reply 10):
Pier D at YYC had an overwing airbridge that WS tried out for a while. Don't know if it is still there or not. I should really look the next time I fly out of D.

I know that the overwing half of it has been boarded up for a few years - to my disappointment the one time I boarded through that gate. I think last time I passed by that they'd taken it down completely, but I may be wrong. I guess it just didn't make that much of a difference? Or maybe the UA incident had something to do with it.
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