---
kind: "section"
citation: "14 C.F.R. § 35.41"
title: "14"
number: "35.41"
heading: "Overspeed and overtorque."
url: "https://uscodex.org/cfr/14/35.41"
---

# §35.41. Overspeed and overtorque.

- (a) When the applicant seeks approval of a transient maximum propeller overspeed, the applicant must demonstrate that the propeller is capable of further operation without maintenance action at the maximum propeller overspeed condition. This may be accomplished by:
  - (1) Performance of 20 runs, each of 30 seconds duration, at the maximum propeller overspeed condition; or
  - (2) **Analysis based on test or service experience.**
- (b) When the applicant seeks approval of a transient maximum propeller overtorque, the applicant must demonstrate that the propeller is capable of further operation without maintenance action at the maximum propeller overtorque condition. This may be accomplished by:
  - (1) Performance of 20 runs, each of 30 seconds duration, at the maximum propeller overtorque condition; or
  - (2) **Analysis based on test or service experience.**

## Notes

### Amendments

[Amdt. 35-8, 73 FR 63349, Oct. 24, 2008]

### Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704.

### Source

Source: Docket No. 2095, 29 FR 7458, June 10, 1964, unless otherwise noted.

### Amendments

[Amdt. 35-8, 73 FR 63349, Oct. 24, 2008]