# 14 CFR § 27.1327: Magnetic direction indicator

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1327

## Section

- **Citation:** 14 CFR § 27.1327
- **Heading:** Magnetic direction indicator
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 14—Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER C—AIRCRAFT > PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT > Subpart F—Equipment > Instruments: Installation

## Text

(a) Except as provided in paragraph (b) of this section—
(1) Each magnetic direction indicator must be installed so that its accuracy is not excessively affected by the rotorcraft's vibration or magnetic fields; and
(2) The compensated installation may not have a deviation, in level flight, greater than 10 degrees on any heading.
(b) A magnetic nonstabilized direction indicator may deviate more than 10 degrees due to the operation of electrically powered systems such as electrically heated windshields if either a magnetic stabilized direction indicator, which does not have a deviation in level flight greater than 10 degrees on any heading, or a gyroscopic direction indicator, is installed. Deviations of a magnetic nonstabilized direction indicator of more than 10 degrees must be placarded in accordance with § 27.1547(e).
(Secs. 313(a), 601, 603, 604, and 605 of the Federal Aviation Act of 1958 (49 U.S.C. 1354(a), 1421, 1423, 1424, and 1425); and sec. 6(c) of the Dept. of Transportation Act (49 U.S.C. 1655(c)))
[Amdt. 27-13, 42 FR 36972, July 18, 1977]

## Nearby sections

- [14 CFR § 27.1301 § 27.1301 Function and installation.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1301.md)
- [14 CFR § 27.1303 § 27.1303 Flight and navigation instruments.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1303.md)
- [14 CFR § 27.1305 § 27.1305 Powerplant instruments.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1305.md)
- [14 CFR § 27.1307 § 27.1307 Miscellaneous equipment.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1307.md)
- [14 CFR § 27.1309 § 27.1309 Equipment, systems, and installations.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1309.md)
- [14 CFR § 27.1316 § 27.1316 Electrical and electronic system lightning protection.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1316.md)
- [14 CFR § 27.1317 § 27.1317 High-intensity Radiated Fields (HIRF) Protection.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1317.md)
- [14 CFR § 27.1321 § 27.1321 Arrangement and visibility.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1321.md)
- [14 CFR § 27.1322 § 27.1322 Warning, caution, and advisory lights.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1322.md)
- [14 CFR § 27.1323 § 27.1323 Airspeed indicating system.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1323.md)
- [14 CFR § 27.1325 § 27.1325 Static pressure systems.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1325.md)
- [14 CFR § 27.1327 § 27.1327 Magnetic direction indicator.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1327.md)
- [14 CFR § 27.1329 § 27.1329 Automatic pilot and flight guidance system.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1329.md)
- [14 CFR § 27.1337 § 27.1337 Powerplant instruments.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1337.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1327. Check the current official text before relying on it. Not legal advice.