What is the absolute ceiling of an airplane?
A
The point where the minimum rate of climb becomes lower than the optimum L/DMAX speed.
B
The altitude at which the aircraft is unable to climb at more than 100 feet per minute.
C
When the maximum rate of climb and the maximum angle of climb speeds converge.✓ Correct Answer
Explanation
As altitude increases, VX rises and VY falls until they meet at the absolute ceiling, where the airplane can no longer climb (PHAK Chapter 11). 100 feet per minute defines the service ceiling, not the absolute ceiling.
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