---
kind: "section"
citation: "14 C.F.R. § 25.1381"
title: "14"
number: "25.1381"
heading: "Instrument lights."
url: "https://uscodex.org/cfr/14/25.1381"
---

# §25.1381. Instrument lights.

- (a) **The instrument lights must—**
  - (1) Provide sufficient illumination to make each instrument, switch and other device necessary for safe operation easily readable unless sufficient illumination is available from another source; and
  - (2) **Be installed so that—**
    - (i) Their direct rays are shielded from the pilot's eyes; and
    - (ii) **No objectionable reflections are visible to the pilot.**
- (b) Unless undimmed instrument lights are satisfactory under each expected flight condition, there must be a means to control the intensity of illumination.

## Notes

### Amendments

[Doc. No. 5066, 29 FR 18291, Dec. 24, 1964, as amended by Amdt. 25-72, 55 FR 29785, July 20, 1990]

### 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. 25-72, 55 FR 29785, July 20, 1990]