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kitplane01
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Jetbridges

Sat Jul 24, 2021 10:35 pm

Do jetbridges come in various heights? If Delta decides to divert a 777/A350 to the local small regional airport, can the jet bridge handle passenger unload? Can it even reach up to the 777/A350s door? Can the small regional airport even unload the bags?
 
phatfarmlines
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Re: Jetbridges

Sat Jul 24, 2021 11:06 pm

kitplane01 wrote:
Do jetbridges come in various heights? If Delta decides to divert a 777/A350 to the local small regional airport, can the jet bridge handle passenger unload? Can it even reach up to the 777/A350s door? Can the small regional airport even unload the bags?


A typical modern swinging radial jetbridge connected to the second story gate area should be able to serve both widebodies and narrowbodies. The question then becomes if such ramp equipment at said small regional airport can serve these widebodies, and that is typically no, unless special arraignments have been made in advance for charters such as sports teams or military.

Now, ground-level jetbridges, connected to the ground-level gate area and not some elevated ramp, at small airports will not be able to serve the widebodies. The most they'll be able to serve will be A320-sized aircraft, which tend to sit higher off the ground than 737s. Even the 757s might be pushing it. Having said that, you will likely find pictures of EA L-1011s and 747s at the old JFK Terminal 1 where the jetways were at ground level, though I believe there were some elevated ramps used to bump up the height.
 
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zeke
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Re: Jetbridges

Sun Jul 25, 2021 4:04 am

kitplane01 wrote:
Do jetbridges come in various heights? If Delta decides to divert a 777/A350 to the local small regional airport, can the jet bridge handle passenger unload? Can it even reach up to the 777/A350s door? Can the small regional airport even unload the bags?


For diversions stairs will often do, along with a remote stand. Often the limiting factor is the availability of a pushback bar for that aircraft type.
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rjsampson
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Re: Jetbridges

Sun Jul 25, 2021 7:13 pm

One of the things you'll notice upon entering the aircraft at the end of a jet bridge is an armature with a wheel on the end, resting on the AC fuselage.

The wheel senses changes in height of the aircraft, as people and baggage change its weight while embarking and disembarking.

In response, hydraulics adjust the height of the jet bridge accordingly. Many of these have hydraulics have a wide enough range to go from an RJ to a widebody.. I did indeed see the same model bridge at a regional airport with those capabilities. I'll have to think back to recall which one.
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FGITD
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Re: Jetbridges

Mon Jul 26, 2021 1:43 am

As mentioned, most jet bridges can go from high enough up to handle a 77w or other wide body (And they can usually go much higher than would ever be practical) all the way down to the ground/CRJ level. They’re surprisingly flexible for use.

Diversions are tricky. If you need to get down, you get down wherever, regardless of what facilities they have. If need be, disembark/reroute the pax and offload the plane at the next airport and rush the bags out. But if the diversion airport doesn’t even have a belt loader, odds are the pax aren’t leaving until their plane does.

Wide bodies tend to be gas and go diversions, no one gets on or off. Or they go to a bigger airport with facilities and GSE, Or…bags stay with the plane until it leaves.
 
PresRDC
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Re: Jetbridges

Mon Jul 26, 2021 2:21 pm

We frequently get Delta 764s at SBN for Notre Dame football team charters. They load at the private FBO on the opposite side of the airport from the terminal and use stairs. They do not use containers for bags - I suspect the guys just carry-on as all the heavy equipment goes to away games by truck.
 
shamrock137
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Re: Jetbridges

Mon Jul 26, 2021 6:11 pm

zeke wrote:
For diversions stairs will often do, along with a remote stand. Often the limiting factor is the availability of a pushback bar for that aircraft type.


Towbar is a good point. The other limiting factor can be wingtip and tail clearance. At mid size airports, the gates might not be sized to handle a widebody. Usually on the lead in line, you can see all the different stop points for the ground crew to correctly position the nose wheel when they marshal an aircraft in. Some gates are narrow body only, since if a widebody parked on the gate, the tail might hang over on the taxiway, or the wings might extend into the adjacent gates.
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