CFR > Title 14 - Aeronautics and Space > CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION > SUBCHAPTER C—AIRCRAFT (parts 21 to 50) > PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT > SUBPART F—Equipment (§27.1301 to §27.1461) > 27.1321—Arrangement and visibility.

27.1321—Arrangement and visibility.

(a) Each flight, navigation, and powerplant instrument for use by any pilot must be easily visible to him.
(b) For each multiengine rotorcraft, identical powerplant instruments must be located so as to prevent confusion as to which engine each instrument relates.
(c) Instrument panel vibration may not damage, or impair the readability or accuracy of, any instrument.
(d) If a visual indicator is provided to indicate malfunction of an instrument, it must be effective under all probable cockpit lighting conditions.

Code of Federal Regulations

(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) ))

Code of Federal Regulations

[Doc. No. 5074, 29 FR 15695, Nov. 24, 1964; 29 FR 17885, Dec. 17, 1964, as amended by Amdt. 27-13, 42 FR 36971, July 18, 1977]