VMCA /Vmca

The minimum control speed in the air. The minimum flight speed at which the airplane is controllable with a maximum 5° bank when the critical engine suddenly becomes inoperative with the remaining engines at takeoff thrust. The conditions for calculations of VMCA are (i) critical engine at idle power setting, (ii) critical propeller windmilling, (iii) operating engine producing maximum thrust, (iv) landing gear and flaps up, (v) aircraft loaded at the most aft allowable center of gravity, (vi) aircraft loaded to the maximum gross weight, (vii) up to 5° of bank toward the operating engine, and (viii) atmospheric conditions normalized to standard day at sea-level pressure.

Aviation dictionary. 2014.

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