---
kind: "section"
citation: "14 C.F.R. § 23.2435"
title: "14"
number: "23.2435"
heading: "Powerplant induction and exhaust systems."
url: "https://uscodex.org/cfr/14/23.2435"
---

# §23.2435. Powerplant induction and exhaust systems.

- (a) **The air induction system for each powerplant or auxiliary power unit and their accessories must—**
  - (1) Supply the air required by that powerplant or auxiliary power unit and its accessories under likely operating conditions;
  - (2) Be designed to prevent likely hazards in the event of fire or backfire;
  - (3) Minimize the ingestion of foreign matter; and
  - (4) **Provide an alternate intake if blockage of the primary intake is likely.**
- (b) The exhaust system, including exhaust heat exchangers for each powerplant or auxiliary power unit, must—
  - (1) Provide a means to safely discharge potential harmful material; and
  - (2) **Be designed to prevent likely hazards from heat, corrosion, or blockage.**

## Notes

### Authority

Authority: 49 U.S.C. 106(f), 106(g), 40113, 44701-44702, 44704, Pub. L. 113-53, 127 Stat. 584 (49 U.S.C. 44704) note.

### Source

Source: Doc. No. FAA-2015-1621, Amdt. 23-64, 81 FR 96689, Dec. 30, 2016, unless otherwise noted.