---
kind: "section"
citation: "14 C.F.R. § 125.145"
title: "14"
number: "125.145"
heading: "Firewall construction."
url: "https://uscodex.org/cfr/14/125.145"
---

# §125.145. Firewall construction.


Each firewall and shroud must—

- (a) Be so made that no hazardous quantity of air, fluids, or flame can pass from the engine compartment to other parts of the airplane;
- (b) Have all openings in the firewall or shroud sealed with close-fitting fireproof grommets, bushings, or firewall fittings;
- (c) Be made of fireproof material; and
- (d) **Be protected against corrosion.**

## Notes

### Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44705, 44710-44711, 44713, 44716-44717, 44722.

### Source

Source: Docket 19779, 45 FR 67235, Oct. 9, 1980, unless otherwise noted.