The altitude limitation on operating the slats/flaps of the A320 aircraft exists because Airbus did not conduct tests on the flaps and slats at altitudes above 20,000 ft. This decision was made because testing the effects of flaps and slats at higher altitudes becomes more complex. As the aircraft ascends, the impact of compressibility on … Continue reading Why is there an altitude limitation on operating the slats/flaps on the A320?