PA.IX.F.K3FAA-S-ACS-6C · Nov 2023Knowledge

Accelerate/stop and accelerate/go distances.

ACS element text (the applicant demonstrates understanding of)

Accelerate/stop and accelerate/go distances.

Bottom line

The distance required to accelerate to V1 with all engines at takeoff power, experience an engine failure at V1, and abort the takeoff and bring the airplane to a stop using braking action only (use of thrust reversing is not considered). The regulations do not specifically require that the runway length be equal to or greater than the accelerate-stop distance.

Key numbers

Key numbers for Accelerate/stop and accelerate/go distances.
NumberWhat it means
35 feet — the runway required for accelerate-go includes the distance to climb to 35 feet, by which time V2 speed must be attainedClimb to 35 ft

FAA references

  1. PHAK Glossary (p. G-1) — FAA-H-8083-25C (2023)
  2. AFH ch. 13 (p. 13-12) — FAA-H-8083-3C
  3. FAA-P-8740-66, Flying Light Twins Safely — FAA-P-8740-66
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