CS 22.1545 Air-speed indicator

• ED Decision 2003/13/RM found in: Sailplane Rule Book - Part-SAO Part-SFCL CS-22 (Nov 2022)

CS 22.1545 Air-speed indicator ED Decision 2003/13/RM Each air-speed indicator must show the following markings: (a) For VNE, a radial red line. If VNE varies with altitude, there must be a means to indicate to the pilot the appropriate limitations throughout the operating altitude range. (See [AMC 22.1545(a)](#_DxCrossRefBm2056272358)) (b) for the upper caution range a yellow arc extending from VNE to the allowable rough-air speed VRA; (c) for the normal operating range, a green arc with the lower limit at 1.1 VS1 with maximum weight and for wing-flaps neutral (see [AMC 22.335](#_DxCrossRefBm2056272075)) and landing gear retracted and the upper limit at the rough-air speed VRA; (d) for the wing-flap operating range, a white arc with the lower limit at the stall speed 1.1 VS0 for maximum weight and the upper limit at the allowable wing-flaps extended speed VFE; (e) a yellow marking (triangle) for the lowest approach speed (at maximum weight without water ballast) recommended by the manufacturer; (f) for the best rate-of-climb speed VY a blue radial line (for powered sailplanes only). service.