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Federal Aviation Regulations

Sec. 23.55 — Accelerate-stop distance.

For each commuter category airplane, 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 VEFwith all engines operating;

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

(3) Come to a full stop from the point at which V1is 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]

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