squirrel83
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Boeings High-Altitude Package

Sat Jun 25, 2005 8:50 am

Today Boeing Delivered China Eastern's First 737-700s with High-Altitude Package. What is the High-Altitude package? How much higher can the aircaraft go compared to a reguar aircraft? Any information is helpfull. . . .

[Edited 2005-06-25 01:51:10]
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OPNLguy
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RE: Boeings High-Altitude Package

Sat Jun 25, 2005 9:01 am

I suspect the "high-altitude" refers to airport elevations in mountainous areas, and not cruising altitudes.
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B747-437B
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RE: Boeings High-Altitude Package

Sat Jun 25, 2005 9:10 am

AFAIK, 9W had one or two of their aircraft retrofitted with this for operations to IXL.
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yul332LX
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RE: Boeings High-Altitude Package

Sat Jun 25, 2005 9:23 am

I believe Airbus has installed a similar package on the A319s operating to Tibet.
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F14D4ever
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RE: Boeings High-Altitude Package

Sat Jun 25, 2005 11:11 am

Quoting OPNLguy (Reply 1):
I suspect the "high-altitude" refers to airport elevations in mountainous areas, and not cruising altitudes.

That's a good guess. If the runway is more than 15,000 feet ASL, they'll want a special engine rating for takeoff, just for starters. All of the takeoff ratings I've seen stop at that altitude.
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patrickj
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RE: Boeings High-Altitude Package

Sat Jun 25, 2005 12:42 pm

In addition to engine ratings, special provisions must be made for the cabin pressure controller and the cabin altitude warning/passenger oxygen system.
 
SNATH
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RE: Boeings High-Altitude Package

Sat Jun 25, 2005 12:55 pm

Instead of speculating, let's do something really unusual... like reading Boeing's page!

http://www.boeing.com/news/releases/2005/q2/nr_050624g.html

"The modifications include one hour of additional emergency oxygen supply and enhancements to the cabin pressure control system that allows operations at airports located at up to 14,500 feet. These airplanes can use the high-elevation airports in Western China such as Lhasa and Bangda."

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HAWK21M
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RE: Boeings High-Altitude Package

Mon Jun 27, 2005 10:09 pm

http://www.boeing.com/news/releases/2005/q2/nr_050624g.html
The link above speaks of the delivery of an High Altitude Package.The modifications include one hour of additional emergency oxygen supply and enhancements to the cabin pressure control system that allows operations at airports located at up to 14,500 feet.

Shouldn't this be only a larger capacity O2 cylinder for crew & larger sized O2 generators for Pax.And a CPC upgrade.Or is there more to it.
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kellmark
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RE: Boeings High-Altitude Package

Mon Jun 27, 2005 10:38 pm

They may also need special high speed tires and brakes, due to the high ground speeds at high altitidue airports.