# 14 CFR § 27.1505: Never-exceed speed

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-14-27.1505

## Section

- **Citation:** 14 CFR § 27.1505
- **Heading:** Never-exceed speed
- **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 > Operating Limitations

## Text

(a) The never-exceed speed, VNE, must be established so that it is—
(1) Not less than 40 knots (CAS); and
(2) Not more than the lesser of—
(i) 0.9 times the maximum forward speeds established under § 27.309;
(ii) 0.9 times the maximum speed shown under §§ 27.251 and 27.629; or
(iii) 0.9 times the maximum speed substantiated for advancing blade tip mach number effects.
(b) VNE may vary with altitude, r.p.m., temperature, and weight, if—
(1) No more than two of these variables (or no more than two instruments integrating more than one of these variables) are used at one time; and
(2) The ranges of these variables (or of the indications on instruments integrating more than one of these variables) are large enough to allow an operationally practical and safe variation of VNE.
(c) For helicopters, a stabilized power-off VNE denoted as VNE (power-off) may be established at a speed less than VNE established pursuant to paragraph (a) of this section, if the following conditions are met:
(1) VNE (power-off) is not less than a speed midway between the power-on VNE and the speed used in meeting the requirements of—
(i) § 27.65(b) for single engine helicopters; and
(ii) § 27.67 for multiengine helicopters.
(2) VNE (power-off) is—
(i) A constant airspeed;
(ii) A constant amount less than power-on VNE; or
(iii) A constant airspeed for a portion of the altitude range for which certification is requested, and a constant amount less than power-on VNE for the remainder of the altitude range.
(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. 27-2, 33 FR 964, Jan. 26, 1968, and Amdt. 27-14, 43 FR 2325, Jan. 16, 1978; Amdt. 27-21, 49 FR 44435, Nov. 6, 1984]

## 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-14-27.1505. Check the current official text before relying on it. Not legal advice.