§ 23.55 - Accelerate-stop distance.

§ 23.55 Accelerate-stop distance.

For normal, utility, and acrobatic category multiengine jets of more than 6,000 pounds maximum weight and commuter category airplanes, the accelerate-stop distance must be determined as follows:

(a) The accelerate-stop distance is the sum of the distances necessary to -

(1) Accelerate the airplane from a standing start to V_EF with all engines operating;

(2) Accelerate the airplane from V_EF to V₁, assuming the critical engine fails at V_EF; and

(3) Come to a full stop from the point at which V₁ is reached.

(b) Means other than wheel brakes may be used to determine the accelerate-stop distances if that means -

(1) Is safe and reliable;

(2) Is used so that consistent results can be expected under normal operating conditions; and

(3) Is such that exceptional skill is not required to control the airplane.

[Amdt. 23-34, 52 FR 1826, Jan. 15, 1987, as amended by Amdt. 23-50, 61 FR 5185, Feb. 9, 1996, as amended by Amdt. 23-62, 76 FR 75753, Dec. 2, 2011]