---
kind: "section"
citation: "14 C.F.R. § 23.2145"
title: "14"
number: "23.2145"
heading: "Stability."
url: "https://uscodex.org/cfr/14/23.2145"
---

# §23.2145. Stability.

- (a) **Airplanes not certified for aerobatics must—**
  - (1) Have static longitudinal, lateral, and directional stability in normal operations;
  - (2) Have dynamic short period and Dutch roll stability in normal operations; and
  - (3) **Provide stable control force feedback throughout the operating envelope.**
- (b) No airplane may exhibit any divergent longitudinal stability characteristic so unstable as to increase the pilot's workload or otherwise endanger the airplane and its occupants.

## Notes

### 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.