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:
“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."
