Airspeed indicator.

  1. Law
  2. CFR 14
  3. Aeronautics and Space
  4. Federal Aviation Administration, Department of Transportation
  5. Aircraft
  6. Airworthiness Standards: Normal Category Rotorcraft
  7. Operating Limitations and Information
  8. Markings and Placards
  9. Airspeed indicator.

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§ 27.1545 Airspeed indicator.

(a) Each airspeed indicator must be marked as specified in paragraph (b) of this section, with the marks located at the corresponding indicated airspeeds.

(b) The following markings must be made:

(1) A red radial line -

(i) For rotocraft other than helicopters, at VNE; and

(ii) For helicopters at VNE (power-on).

(2) A red cross-hatched radial line at VNE (power-off) for helicopters, if VNE (power-off) is less than VNE (power-on).

(3) For the caution range, a yellow arc.

(4) For the safe operating range, a green arc.

(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. 27-14, 43 FR 2325, Jan. 16, 1978; 43 FR 3900, Jan. 30, 1978; Amdt. 27-16, 43 FR 50599, Oct. 30, 1978]


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