---
kind: "section"
citation: "14 C.F.R. § 25.929"
title: "14"
number: "25.929"
heading: "Propeller deicing."
url: "https://uscodex.org/cfr/14/25.929"
---

# §25.929. Propeller deicing.

- (a) If certification for flight in icing is sought there must be a means to prevent or remove hazardous ice accumulations that could form in the icing conditions defined in Appendix C of this part and in the portions of Appendix O of this part for which the airplane is approved for flight on propellers or on accessories where ice accumulation would jeopardize engine performance.
- (b) If combustible fluid is used for propeller deicing, §§ [25.1181 through 25.1185](/cfr/14/25.1181..25.1185.md) and [25.1189](/cfr/14/25.1189.md) apply.

## Notes

### Amendments

[ Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-140, 79 FR 65525, Nov. 4, 2014]

### 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.

### Amendments

[ Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-140, 79 FR 65525, Nov. 4, 2014]