---
kind: "section"
citation: "14 C.F.R. § 121.354"
title: "14"
number: "121.354"
heading: "Terrain awareness and warning system."
url: "https://uscodex.org/cfr/14/121.354"
---

# §121.354. Terrain awareness and warning system.

- (a) **Airplanes manufactured after March 29, 2002.** No person may operate a turbine-powered airplane unless that airplane is equipped with an approved terrain awareness and warning system that meets the requirements for Class A equipment in Technical Standard Order (TSO)-C151. The airplane must also include an approved terrain situational awareness display.
- (b) **Airplanes manufactured on or before March 29, 2002.** No person may operate a turbine-powered airplane after March 29, 2005, unless that airplane is equipped with an approved terrain awareness and warning system that meets the requirements for Class A equipment in Technical Standard Order (TSO)-C151. The airplane must also include an approved terrain situational awareness display.
- (c) **Airplane Flight Manual.** The Airplane Flight Manual shall contain appropriate procedures for—
  - (1) The use of the terrain awareness and warning system; and
  - (2) Proper flight crew reaction in response to the terrain awareness and warning system audio and visual warnings.

## Notes

### Amendments

[Docket 29312, 65 FR 16755, Mar. 29, 2000]

### Source

Source: Docket 6258, 29 FR 19205, Dec. 31, 1964, unless otherwise noted.

### Authority

Authority: 49 U.S.C. 106(f), 40103, 40113, 40119, 41706, 42301 preceding note added by Pub. L. 112-95, sec. 412, 126 Stat. 89, 44101, 44701-44702, 44705, 44709-44711, 44713, 44716-44717, 44722, 44729, 44732; 46105; Pub. L. 111-216, 124 Stat. 2348 (49 U.S.C. 44701 note); Pub. L. 112-95, 126 Stat. 62 (49 U.S.C. 44732 note); Pub. L. 115-254, 132 Stat. 3186 (49 U.S.C. 44701 note).

### Amendments

[Docket 29312, 65 FR 16755, Mar. 29, 2000]