Flight 447 was also flying at a cruise altitude of 35,000 feet, an altitude where the relationship between an aircraft's stall speed and the speed of sound has gained the name the coffin corner.
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Dutch roll is a type of aircraft motion consisting of an out-of-phase combination of tail-wagging (yaw) and rocking from side to side (roll). This yaw-roll coupling is one of the basic flight dynamic modes (others include phugoid, short period, and spiral divergence).
What is the difference between Service Ceiling and Absolute Ceiling? Service Ceiling is the height at which the maximum rate of climb reduces to 100 fpm.Absolute Ceiling is the height at which the rate of climb is reduced to zero (0).
Specifically, the absolute ceiling is the highest altitude that an aircraft can maintain level flight without being affected by the pressure difference between the outside pressure and the in-cabin pressure.