Except when in cruise flight, below what altitude are non-safety related cockpit activities by flight crewmembers prohibited?
A
FL 180.
B
14,500 feet.
C
10,000 feet.✓ Correct Answer
Explanation
14 CFR 121.542 defines critical phases of flight as ground operations, takeoff, landing and all flight operations below 10,000 feet except cruise, and during them non-safety-related activities are prohibited (sterile cockpit).
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