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§ 29.65 Climb: All engines operating.
(a) The steady rate of climb must be determined -
(1) With maximum continuous power;
(2) With the landing gear retracted; and
(3) At Vy for standard sea level conditions and at speeds selected by the applicant for other conditions.
(b) For each Category B rotorcraft except helicopters, the rate of climb determined under paragraph (a) of this section must provide a steady climb gradient of at least 1:6 under standard sea level conditions.