Text in force at 23-63: from 23-62, effective 31 Jan 2012.
There must be an airspeed placard in clear view of the pilot and as close as practicable to the airspeed indicator. This placard must list--
(a) The operating maneuvering speed VO; and
(b) The maximum landing gear operating speed VLO.
(c) For reciprocating multiengine-powered airplanes of more than 6,000 pounds maximum weight, and turbine engine-powered airplanes, the maximum value of the minimum control speed, VMC (one-engine-inoperative) determined under Sec. 23.149(b).
(d) The airspeed placard(s) required by this section need not be lighted if the landing gear operating speed is indicated on the airspeed indicator or other lighted area such as the landing gear control and the airspeed indicator has features such as low speed awareness that provide ample warning prior to VMC. -
76 FR 75763 · Source