I tried a take off from Lhasa Gonggar Airport ( TIbet ) today in the A32nx. During take off the engines just sputtered and I couldn’t reach rotate speed. I thought it was a bug so restarted and it was the same . I then tried a take off at a lower altitude airport and it was fine .
Does anyone have any hints and tips for taking off at a high altitude airport.
Flaps 2, toga in stead of manflex, and let the engines spool up to about 60%N1 before releasing the brakes
Well for one thing the max pressure altitude for takeoff is 9200ft. What was the elevation for the first airport mentioned? The weather conditions at the time?
higher the altitude less dense it becomes = less lift.
more speed and flaps and etc as mentioned above
Elevation is 11,713 ft. That’s your problem.
A320 operates at even higher altitude airports in reality!
I just tried to take off with A320 from ZULS with a bugged 44 Celsius and same issue here.
Flaps 2, TOGA. Everything looking good but EGT will go into red then go back to green then red again.
I didn’t try Flex take off though.
I’m not sure how that is possible, unless what I am looking at is for a specific rated engine. I did a quick google for the numbers.
Addendum: I was incorrect. The limitation I previously mentioned was a broad limitation for older, non-sharklet Airbus aircraft. I can at least verify that the A319 with sharklet wings are good up to 14,100ft for takeoff and landing.
I still can’t find A320neo maximum takeoff altitude that would support this airport. Are you sure they were A320s and not A319s? Everything I’m finding for A320neo is much lower.
Update:
I still can’t find verifiable information that says the A320neo can takeoff up to 14100ft. However, I did get information that the reason the A319 can is because of an option Airbus has for high altitude pressurization schedule, activated by a push button. So I’m thinking that the A320neo can takeoff at extreme elevations but the question is does it come with this option or can the pressurization keep up.
44°C at nearly 12,000’ elevation??
Ah so we’re on Venus now…
“Please do not open the window shades”
I just did a quick take off from this airport.50% fuel.Spooled up to about 65%…Lumbered down the runway.Took a bit longer to increase speed but about 2/3rds the way down.,lumbered into the air with 2 notches of flaps at about 110 knots.
Was that with any payload? 
You all are killing me. I got to try this now.
There is a bug in the core simulation that has existed since the initial release where air temperature at high altitude airports will be much too high if you use Live Weather.
The only way around it at the moment is to use the clear sky preset, which will give the ISA standard temperature appropriate for the airport elevation. If you were seeing +44C, that, (combined with the 11.000 foot elevation), is probably the main reason why the engines overheat, or fail to develop enough power to take off.
There is a long-standing bug in Live Weather, where the air temperature provided in the MeteoBlue forecast model is being incorrectly modified based on the elevation of the surrounding terrain. The air temp will always be much too high, and the error gets worse and worse the higher the airport elevation.
This used to be very evident at Telluride airport in Colorado KTEX, which is at 9,200 feet elevation. The bug is now partially-concealed at that airport since the LiveWeather system started using actual METAR observations for airport wind, temperature and pressure (when METARS are available). Now, if you spawn at KTEX with Live Weather today, you will see the correct temperature -6C on the surface. But if you take off, as soon as the aircraft gets about 1500 feet above the ground, the METAR temperature is replaced by the pure LiveWeather model temperature, and you will see it shoot up from -6C to about +20C.
ZULS airport in Tibet does not report METARS, so the temperature with LiveWeather active will always be absurdly high, even in the dead of winter, because of the airport’s 11,000 foot elevation.
If you use the clear sky preset, you will get the ISA temperature for 11,000 feet, which will be about -7C summer or winter.
This elevation-related temperature bug in LiveWeather has been happening since the initial release of the sim in August, and reported to Zendesk multiple times. It has never been corrected or even acknowledged.
For usual A320 Runway altitude: from -2000 up to 9 200 ft.
Official Airbus Document:
AIRCRAFT CHARACTERISTICS - AIRPORT AND MAINTENANCE PLANNING
A320 series section 3-3-2
Maximum airfield operating altitude is even above 14000ft with MTOW, but required runway length then exceeds 4500m
With Cessna Longitude or C4J, I successfully took off with MTOW at 20°C OAT from Lhasa, but it is not working with A320neo; what surprise …
Thanks but I still don’t see anything in that section that says A320neo can takeoff at 14,100ft. The charts provided has data plots up to 8,000ft.
Maybe the Chinese C. Party bans you from flying in Tibet lol
Yeah I got the same thing with live weather. +46 C at 11,700. LOL. You need rocket motors to get this to takeoff.