CS-VLA 1323 Airspeed indicating system
ED Decision 2003/18/RM
(a) The airspeed indicating system must be calibrated to indicate true airspeed at sea-level in standard atmosphere with a maximum pitot-static error not exceeding ± 8 km/h or ±5% whichever is greater, through the following speed range:
(1) 1.3 VS1 to VNE, with wing-flaps retracted.
(2) 1.3 VS1 to VFE, with wing-flaps extended.
(b) Calibration must be made in flight.
(c) The airspeed indicating system must be suitable for speeds between VS0 and at least 1.05 times VNE.
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