---
kind: "section"
citation: "14 C.F.R. § 25.503"
title: "14"
number: "25.503"
heading: "Pivoting."
url: "https://uscodex.org/cfr/14/25.503"
---

# §25.503. Pivoting.

- (a) **The airplane is assumed to pivot about one side of the main gear with the brakes on that side locked.** The limit vertical load factor must be 1.0 and the coefficient of friction 0.8.
- (b) The airplane is assumed to be in static equilibrium, with the loads being applied at the ground contact points, in accordance with figure 8 of appendix A.

## Notes

### Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701, 44702 and 44704; Pub. L. 115-254, 132 Stat 3281 (49 U.S.C. 44903 note).

### Source

Source: Docket No. 5066, 29 FR 18291, Dec. 24, 1964, unless otherwise noted.