---
kind: "section"
citation: "14 C.F.R. § 25.869"
title: "14"
number: "25.869"
heading: "Fire protection: systems."
url: "https://uscodex.org/cfr/14/25.869"
---

# §25.869. Fire protection: systems.

- (a) **Electrical system components—**
  - (1) Components of the electrical system must meet the applicable fire and smoke protection requirements of §§ [25.831(c)](/cfr/14/25.831.md?p=c) and [25.863](/cfr/14/25.863.md).
  - (2) Equipment that is located in designated fire zones and is used during emergency procedures must be at least fire resistant.
  - (3) EWIS components must meet the requirements of [§ 25.1713](/cfr/14/25.1713.md).
- (b) Each vacuum air system line and fitting on the discharge side of the pump that might contain flammable vapors or fluids must meet the requirements of [§ 25.1183](/cfr/14/25.1183.md) if the line or fitting is in a designated fire zone. Other vacuum air systems components in designated fire zones must be at least fire resistant.
- (c) **Oxygen equipment and lines must—**
  - (1) Not be located in any designated fire zone,
  - (2) Be protected from heat that may be generated in, or escape from, any designated fire zone, and
  - (3) Be installed so that escaping oxygen cannot cause ignition of grease, fluid, or vapor accumulations that are present in normal operation or as a result of failure or malfunction of any system.

## Notes

### Amendments

[Amdt. 25-72, 55 FR 29784, July 20, 1990, as amended by Amdt. 25-113, 69 FR 12530, Mar. 16, 2004; Amdt. 25-123, 72 FR 63405, Nov. 8, 2007]

### 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

[Amdt. 25-72, 55 FR 29784, July 20, 1990, as amended by Amdt. 25-113, 69 FR 12530, Mar. 16, 2004; Amdt. 25-123, 72 FR 63405, Nov. 8, 2007]