§ 29.1545 - Airspeed indicator.  


Latest version.
  • § 29.1545 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— line:

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

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

    (

    2

    iii)

    A red, cross-hatched radial line

    For helicopters, at VNE (power-off)

    for helicopters, if

    . If VNE (power-off) is less than VNE (power-on) and both are simultaneously displayed, the red line at VNE (power-off) must be clearly distinguishable from the red line at VNE (power-on).

    (2) [Reserved]

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

    (4) For the safe normal operating range, a green arcor unmarked range.

    [Doc. No. 5084, 29 FR 16150, Dec. 3, 1964, as amended by Amdt. 29–15, 43 FR 2327, Jan. 16, 1978; 43 FR 3900, Jan. 30, 1978; Amdt. 29–17, 43 FR 50602, Oct. 30, 1978; Amdt. 29–59, 88 FR 8740, Feb. 10, 2023]