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18-09-2019, 08:58   #1
funkey_monkey
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A320 C of G issues

So does anyone have greater detail on the a320neo cog issue?
Seems like a pretty fundamental error to get that wrong.

Moved out of 737 Max thread

Last edited by Irish Steve; 18-09-2019 at 13:27. Reason: moved to avoid confusion
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18-09-2019, 13:02   #2
cnocbui
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What's that got to do with the 737 Max?
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18-09-2019, 13:20   #3
Car99
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Quote:
Originally Posted by funkey_monkey View Post
So does anyone have greater detail on the a320neo cog issue?
Seems like a pretty fundamental error to get that wrong.
Google A321 pitch problem .
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18-09-2019, 16:57   #4
funkey_monkey
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Yeah, but how did they get it wrong? Did they not keep their eye on it during development?
It seems that the scenario has not been encountered during outside of test environment:

Quote:
“Analysis and laboratory testing of the behaviour of the flight control laws of the A320neo identified a reduced efficiency of the angle of attack protection when the aeroplane is set in certain flight configurations and in combination with specific manoeuvres commanded by the flight crew, as described through Section 2 of Airbus Flight Operations Transmission 999.0059/19," EASA said in a 31 July directive.

This condition, although never encountered during operations, if not corrected, could lead to excessive pitch attitude, possibly resulting in increased flight crew workload," it said. “To address this potential unsafe condition, Airbus issued the AFM TR, limiting the centre of gravity envelope, which prevents the aforementioned condition, and the Flight Operations Transmission 999.0059/19, providing aeroplane loading recommendations."
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