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blacksoviet
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747-400 with three jetways attached

Thu Feb 20, 2020 5:30 pm

Does Korean Air ever use all three jetways for boarding/deplaning the 747-400s or is this practice strictly reserved for the 747-8s and the A380s?

How does Lufthansa feel about using triple jetways on the 747-400?

I know it wouldn’t be worth the hassle on a 747-200 or a 77W but the 744 is significantly larger.

What about the 777-9? Will Lufthansa ever attempt to connect all three jetways to this airplane?

Most of the international gates at LAX are equipped with three jetways. The new international terminal appears to be designed with quad-jets in mind.
 
Cubsrule
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Re: 747-400 with three jetways attached

Thu Feb 20, 2020 6:26 pm

Keep in mind that many if not most gates designed with the 388 in mind cannot put three jet bridges on a 744 since upper deck boarding is not possible on the 744.
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Stitch
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Re: 747-400 with three jetways attached

Thu Feb 20, 2020 6:37 pm

Also the jetways might not be long enough to reach door 3L over the wing (this looks to be the case with most of the jetways at LAX - the two long ones are connected to Door 1 and Door 2 while the shortest is unused).
 
unimproved
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Re: 747-400 with three jetways attached

Thu Feb 20, 2020 7:41 pm

Widebody turnaround time isn't as critical and mostly planned around slots and connecting flights. Boarding time isn't really an issue.


Stitch wrote:
Also the jetways might not be long enough to reach door 3L over the wing (this looks to be the case with most of the jetways at LAX - the two long ones are connected to Door 1 and Door 2 while the shortest is unused).

IIRC there have been some airports with door 4 boarding (3 is emergency only) but stopped due to the hassle to get the bridge over the wing.

 
Kno
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Re: 747-400 with three jetways attached

Thu Feb 20, 2020 7:43 pm

I only recall one example of a 748 using the upper deck jetway - a poster here said they did for testing at ORD. I’d love to find out if that really happened or see photos.
 
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77west
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Re: 747-400 with three jetways attached

Thu Feb 20, 2020 10:03 pm

Kno wrote:
I only recall one example of a 748 using the upper deck jetway - a poster here said they did for testing at ORD. I’d love to find out if that really happened or see photos.


I didn't think it was approved by Boeing as the slide pack would need to be disconnected and moved, also, the angle of the roof would probably mean most jetways would have a big gap and not "seal" onto it properly. Could be mistaken though. Given the small capacity of the upper deck it does not seem worth the effort.
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AirKevin
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Re: 747-400 with three jetways attached

Thu Feb 20, 2020 11:23 pm

77west wrote:
Kno wrote:
I only recall one example of a 748 using the upper deck jetway - a poster here said they did for testing at ORD. I’d love to find out if that really happened or see photos.


I didn't think it was approved by Boeing as the slide pack would need to be disconnected and moved, also, the angle of the roof would probably mean most jetways would have a big gap and not "seal" onto it properly.

Not to mention the door opens upwards. That just seems really falloffable.
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Starlionblue
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Re: 747-400 with three jetways attached

Thu Feb 20, 2020 11:48 pm

unimproved wrote:
Widebody turnaround time isn't as critical and mostly planned around slots and connecting flights. Boarding time isn't really an issue.



This is not necessarily the case. A lot of our widebody turnarounds are 60-70 minutes so speed of boarding and disembarkation definitely make a difference. If we are only using one door it does slow things down.
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N1120A
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Re: 747-400 with three jetways attached

Fri Feb 21, 2020 3:20 am

Even if turn time didn't matter, it could become an issue if there was a delay, for any reason. It certainly makes the most sense to minimize boarding time.

That said, I don't think any 747 uses upper deck boarding, including the -8.
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Starlionblue
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Re: 747-400 with three jetways attached

Fri Feb 21, 2020 4:53 am

N1120A wrote:
Even if turn time didn't matter, it could become an issue if there was a delay, for any reason. It certainly makes the most sense to minimize boarding time.

That said, I don't think any 747 uses upper deck boarding, including the -8.


IIRC, the upper deck door is not approved for this use. Evac only.

Besides, I don't think it would make much of a difference as even in full economy config there are not a lot of seats up there.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
unimproved
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Re: 747-400 with three jetways attached

Fri Feb 21, 2020 5:49 am

Starlionblue wrote:
N1120A wrote:
Even if turn time didn't matter, it could become an issue if there was a delay, for any reason. It certainly makes the most sense to minimize boarding time.

That said, I don't think any 747 uses upper deck boarding, including the -8.


IIRC, the upper deck door is not approved for this use. Evac only.

Besides, I don't think it would make much of a difference as even in full economy config there are not a lot of seats up there.

Even if it was approved it'd be pretty awkward to board considering the slide stays in place.
 
n757kw
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Re: 747-400 with three jetways attached

Fri Feb 21, 2020 11:13 am

blacksoviet wrote:
Does Korean Air ever use all three jetways for boarding/deplaning the 747-400s or is this practice strictly reserved for the 747-8s and the A380s?


I have only seen Korean Air use 3 jetways on the A380. The B747-400 and B747-8I I have only seen 2 jetways used. However, some stations do not have 2 or 3 jetways, so only 1 is used.

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conaly
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Re: 747-400 with three jetways attached

Sat Feb 22, 2020 3:26 pm

I don't think you can attach a regular jetway to this door:
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747classic
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Re: 747-400 with three jetways attached

Sat Feb 22, 2020 4:18 pm

- The 747 SUD upper deck door is only certified as an emergency exit
- When opening the door manually in the not armed mode (via a small electrical switch behind a cover at the side of the door) the upper deck slide pack stays in position and blocks the exit.
- The upper deck door is not a plug type door and requires several locks to close (like a cargo door) and moves outboard (hinges above) to open, preventing the use of a jetway with a roof.
- The electrical door opening system is not designed for frequent (daily) use.
- Upper deck doors are only opened for maintenance or sometimes for ventilating the upper deck in hot conditions on the ground, with AIRCO off.
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bohica
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Re: 747-400 with three jetways attached

Tue Feb 25, 2020 6:48 am

In the Airport History facebook page there is a picture of the TWA terminal at JFK. One of the 747's had jetways attached to the R1 and R2 doors and a third jetway that was stretched out next to the L1 door but not attached. It is possible to use 3 jetways on a 747 but I don't know if it was ever done.
 
ClemRD
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Re: 747-400 with three jetways attached

Tue Feb 25, 2020 2:59 pm

I haven't done it lately, but when I used to take BA 747 service LHR-IAD, they used those mobile lounge buggies to take passengers off through the aft doors
 
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77west
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Re: 747-400 with three jetways attached

Wed Feb 26, 2020 2:49 am

bohica wrote:
In the Airport History facebook page there is a picture of the TWA terminal at JFK. One of the 747's had jetways attached to the R1 and R2 doors and a third jetway that was stretched out next to the L1 door but not attached. It is possible to use 3 jetways on a 747 but I don't know if it was ever done.

You could technically have a dual-jetway on both sides (R1+2, L1+2) for 4-door boarding. Probably would not speed up boarding much over just using L1+2.
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speedbird52
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Re: 747-400 with three jetways attached

Wed Feb 26, 2020 7:09 am

blacksoviet wrote:
Does Korean Air ever use all three jetways for boarding/deplaning the 747-400s or is this practice strictly reserved for the 747-8s and the A380s?

How does Lufthansa feel about using triple jetways on the 747-400?

I know it wouldn’t be worth the hassle on a 747-200 or a 77W but the 744 is significantly larger.

What about the 777-9? Will Lufthansa ever attempt to connect all three jetways to this airplane?

Most of the international gates at LAX are equipped with three jetways. The new international terminal appears to be designed with quad-jets in mind.

How does Korean dock three jetway's to the 747-8?
 
blacksoviet
Topic Author
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Re: 747-400 with three jetways attached

Wed Feb 26, 2020 8:35 am

speedbird52 wrote:
blacksoviet wrote:
Does Korean Air ever use all three jetways for boarding/deplaning the 747-400s or is this practice strictly reserved for the 747-8s and the A380s?

How does Lufthansa feel about using triple jetways on the 747-400?

I know it wouldn’t be worth the hassle on a 747-200 or a 77W but the 744 is significantly larger.

What about the 777-9? Will Lufthansa ever attempt to connect all three jetways to this airplane?

Most of the international gates at LAX are equipped with three jetways. The new international terminal appears to be designed with quad-jets in mind.

How does Korean dock three jetway's to the 747-8?

Apparently they only do that with the A380.

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