# 14 CFR § 27.1547: Magnetic direction indicator

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1547

## Section

- **Citation:** 14 CFR § 27.1547
- **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 G—Operating Limitations and Information > Markings and Placards

## Text

(a) A placard meeting the requirements of this section must be installed on or near the magnetic direction indicator.
(b) The placard must show the calibration of the instrument in level flight with the engines operating.
(c) The placard must state whether the calibration was made with radio receivers on or off.
(d) Each calibration reading must be in terms of magnetic heading in not more than 45 degree increments.
(e) If a magnetic nonstabilized direction indicator can have a deviation of more than 10 degrees caused by the operation of electrical equipment, the placard must state which electrical loads, or combination of loads, would cause a deviation of more than 10 degrees when turned on.
(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)))
[Doc. No. 5074, 29 FR 15695, Nov. 24, 1964, as amended by Amdt. 27-13, 42 FR 36972, July 18, 1977]

## Nearby sections

- [14 CFR § 27.1503 § 27.1503 Airspeed limitations: general.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1503.md)
- [14 CFR § 27.1505 § 27.1505 Never-exceed speed.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1505.md)
- [14 CFR § 27.1509 § 27.1509 Rotor speed.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1509.md)
- [14 CFR § 27.1519 § 27.1519 Weight and center of gravity.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1519.md)
- [14 CFR § 27.1521 § 27.1521 Powerplant limitations.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1521.md)
- [14 CFR § 27.1523 § 27.1523 Minimum flight crew.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1523.md)
- [14 CFR § 27.1525 § 27.1525 Kinds of operations.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1525.md)
- [14 CFR § 27.1527 § 27.1527 Maximum operating altitude.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1527.md)
- [14 CFR § 27.1529 § 27.1529 Instructions for Continued Airworthiness.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1529.md)
- [14 CFR § 27.1541 § 27.1541 General.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1541.md)
- [14 CFR § 27.1543 § 27.1543 Instrument markings: general.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1543.md)
- [14 CFR § 27.1545 § 27.1545 Airspeed indicator.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1545.md)
- [14 CFR § 27.1547 § 27.1547 Magnetic direction indicator.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1547.md)
- [14 CFR § 27.1549 § 27.1549 Powerplant instruments.](https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1549.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1547. Check the current official text before relying on it. Not legal advice.