14 C.F.R. § 23.65 Climb: All engines operating.
Title 14 - Aeronautics and Space
(a) Each normal, utility, and acrobatic category reciprocating engine-powered airplane of 6,000 pounds or less maximum weight must have a steady climb gradient at sea level of at least 8.3 percent for landplanes or 6.7 percet for seaplanes and amphibians with— (1) Not more than maximum continuous power on each engine; (2) The landing gear retracted; (3) The wing flaps in the takeoff position(s); and (4) A climb speed not less than the greater of 1.1 VMC and 1.2 VS1 for multiengine airplanes and not less than 1.2 VS1 for single—engine airplanes. (b) Each normal, utility, and acrobatic category reciprocating engine-powered airplane of more than 6,000 pounds maximum weight and turbine engine-powered airplanes in the normal, utility, and acrobatic category must have a steady gradient of climb after takeoff of at least 4 percent with (1) Take off power on each engine; (2) The landing gear extended, except that if the landing gear can be retracted in not more than sven seconds, the test may be conducted with the gear retracted; (3) The wing flaps in the takeoff position(s); and (4) A climb speed as specified in §23.65(a)(4). [Doc. No. 27807, 61 FR 5186, Feb. 9, 1996]
Title 14: Aeronautics and Space
PART 23—AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES
Subpart B—Flight
Performance
§ 23.65 Climb: All engines operating.
