---
kind: "section"
citation: "14 C.F.R. § 23.2115"
title: "14"
number: "23.2115"
heading: "Takeoff performance."
url: "https://uscodex.org/cfr/14/23.2115"
---

# §23.2115. Takeoff performance.

- (a) The applicant must determine airplane takeoff performance accounting for—
  - (1) Stall speed safety margins;
  - (2) Minimum control speeds; and
  - (3) **Climb gradients.**
- (b) For single engine airplanes and levels 1, 2, and 3 low-speed multiengine airplanes, takeoff performance includes the determination of ground roll and initial climb distance to 50 feet (15 meters) above the takeoff surface.
- (c) For levels 1, 2, and 3 high-speed multiengine airplanes, and level 4 multiengine airplanes, takeoff performance includes a determination of the following distances after a sudden critical loss of thrust—
  - (1) An aborted takeoff at critical speed;
  - (2) Ground roll and initial climb to 35 feet (11 meters) above the takeoff surface; and
  - (3) **Net takeoff flight path.**

## Notes

### Amendments

[Doc. No. FAA-2015-1621, Amdt. 23-64, 81 FR 96689, Dec. 30, 2016, as amended by Doc. No. FAA-2022-1355, Amdt. 23-65, 87 FR 75710, Dec. 9, 2022]

### Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704, Pub. L. 113-53, 127 Stat. 584 (49 U.S.C. 44704) note.

### Source

Source: Doc. No. FAA-2015-1621, Amdt. 23-64, 81 FR 96689, Dec. 30, 2016, unless otherwise noted.

### Amendments

[Doc. No. FAA-2015-1621, Amdt. 23-64, 81 FR 96689, Dec. 30, 2016, as amended by Doc. No. FAA-2022-1355, Amdt. 23-65, 87 FR 75710, Dec. 9, 2022]