hi alt airports

I can only assume that it must be a case of different regs for FAA governed operators as that elevation takes my company’s aeroplanes outside the scope covered by our Boeing published Operations Manual. Just from an insurance angle alone that would be a big no no.

Originally posted by wysiwyg
Mixtec, is Quito’s elevation above 8400′? If so and American 757’s are operating into there they must be under a relaxed set of limitations compared to JAA rules. This is not impossible as the FAA allows their 757’s to do Mach 0.86 at high level and 370 knots at low level whereas the JAA only allow Mach 0.84 and 350 knots. There is no difference between the airframes as our 757’s that operate with Ryan in the winter can do the higher speeds in the US but must slow down in the UK!

Quito airport is at 9000 ft. Its runway is 3000 ft long which they say is too short to handle fully loaded jets. Heres a website in spanish that gives specs on the airport:
http://www.ecuadortotal.com/aeropuerto/codigo/tecnicos.html
you can translate it too english with this translater:
http://babelfish.altavista.com/

Hot conditions or high conditions or hot & high conditions affects all aircraft types similarly, however the more retricted the performance of your aircraft at sea level, the more it will show up with altitude and/or temperature.

I cannot think of any circumstance where an Airbus would gain a performance benefit that would not similarly improve the Boeing’s performance.

Mixtec, is Quito’s elevation above 8400′? If so and American 757’s are operating into there they must be under a relaxed set of limitations compared to JAA rules. This is not impossible as the FAA allows their 757’s to do Mach 0.86 at high level and 370 knots at low level whereas the JAA only allow Mach 0.84 and 350 knots. There is no difference between the airframes as our 757’s that operate with Ryan in the winter can do the higher speeds in the US but must slow down in the UK!

Its not just the A343 that have problems taking off at Jnb a heavy 744 seems to take forever as well.

the Airbus love it in cold condictions. I guess if you get it high alt in a mountain where it is cold enough the Airbus will proform better than a Boeing but Hot and High is alot worse for Airbus than Boeing!

What Im really curious is if its possible to fly any type of airline up to the 10,000 ft mark, which is why I mentioned Quito. I doubt a full size jet airliner could operate at such altitude, but how about a turboprop?

You’re absolutely right Mixtec. The 757 is limited to operations from a maximum airfield pressure elevation of 8400′ and the preformance figures either require a bl00dy long runway and no thrust derate or a limitation in payload.

As Bhoy says, JNB was always interesting in the A340-300. It became company policy to inform the passengers before departure that the the off run would be abnormally long.

so is Thimpu.

I believe Mexico City is the same

wys could tell you a thing or two about VS A340-300’s at JNB, they need pretty much full power to lift off there, it’s just to do with the thinner air at altitude.