Device: One Plus
Operating system: Android
On my flight from LEBL to SCEL, 2 hours into the flight at FL380 my plane suddenly out of no where stalled when it was on 0.84 Mach and crashed. I don’t what exactly to do with it since I step climbed it from FL340 to FL380 and kept it for overnight flight and also received violation for overspeeding. Can someone help?
What airplane did you used for that flight ?
Airbus A330-300
what trim did u set for cruise?
Trim was 0.0
BCN to SCL in the A333, FL380 with only 2 hours into the flight, yeah i’m pretty sure that the airplane was HEAVY. The performance of the A333 isn’t that good for you to climb from FL340 to FL380 with only that time of flight, so it was already condemned to an early stall.
I suggest for you to take a look at this link:
But I did check myself and when I climbed to FL380 it stayed well for a couple of minutes so I felt it is all good and then just went to sleep and woke up to a stalled and crashed flight with a violation.
That’s the problem, the plane can reach the altitude but at the cost to loose speed at a low rate, so in the span of 15 to 20 minutes you can go from M0.81 to M0.62 or less and the stall. I’m speaking it from own experience, this same situation also happened to me sometime ago
Okay, thanks for the inputs. It is sad to see a planned flight ruined with a stall and to add to the pain a violation.
This is a useful site that you can put in all the numbers and find out the cruising altitude: https://flightsmart.info/
FL380 at what’s likely to be a heavy plane is probably too high for the A333 (need to be at 20-30% load according to the site)
Thanks mate
At FL380 the A330 probably has extremely little power. As in, zero excess to make up airspeed. What probably happened was a sudden wind shift which reduced airflow over the wings (headwind died probably considering your route). At the lower airspeed it increased the AoA and drag and the engines were unable to pull you out. In most cases I’ve seen of these stalls after being stable this is exactly what has happened to them, because the plane is being operated on the edge of its performance envelope.
I would love to test this but I don’t have a sub anymore so this is just speculation.
When in an a330, I almost always step climb… and I won’t climb directly to my cruise… usually start off below 34,000 feet, and once I burn off fuel, only then I continue to go up. If you look at the flight date of really long flights you can see as they burned off fuel they eventually went up. (Blue line is altitude). See how it gradually goes up like steps over the flight?
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