Hi, whilst recently flying from JFK to PHX in the new A330, I noticed something odd. During cruise, the plane dropped 14,000 feet in like 2 minutes by means of a stall. I was cruising at .80 mach, and at 40,000 feet. As I climbed back up to FL 400 at a normal fpm (around 2500), it kept loosing speed, even while at 100% throttle. Even at 100% throttle with the autopilot at 0 FPM, it kept loosing speed. The only way to get it to gain speed was to dive. Does this happen to anyone else? Thanks, and happy flying!
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try to use step climb as the plane is really heavy in the first stage of the flight
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2500 is much too much as a climb speed past 20000ft.
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The A330 is simply not powerful enough to sustain a climb of 2,500 feet per minute up to 40,000 feet. Try a lower vertical speed such as 1,000 feet per minute. It’s common to find that A330 climbs at a slower speed anyways.
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How do you use step climbs?
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This problem seems like you were to heavy at the altitude. The best way to avoid a stall is step climbing, if you went straight to Fl400 and you are quite heavy, you will stall.
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Use this website for Vspeeds this is what I use all the time AIRBUS A-330-300 | SKYbrary Aviation Safety
make sure that your first altitude of cruise is around FL300 to FL340, if you fly all the way up to FL400 you will need more power as your aircraft is still heavy of all the fuel its carrying, try to fly at FL300-340 first, burn fuel and when you lost fuel/weight you can continue climbing to the a higher alt
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This site has a step climb option in the flight plan construction
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Thank you.
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You can check this guide out to learn how to step climb :)
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If you’re moving the A330 between cruise altitudes you probably want no more than 1000 FPM (500 is probably better, honestly). When at 100% during my testing yesterday it could not sustain a 1000 FPM climb past like FL340
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