CS 22.207 Stall warning

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

CS 22.207 Stall warning ED Decision 2003/13/RM (a) Except as provided by 22.207(d), there must be a clear and distinctive stall warning with air brakes, wing-flaps and landing gear in any normal position, both in straight and in turning flight. In the case of a powered sailplane compliance with this requirement must also be shown with the engine running in the conditions prescribed in [CS 22.201(f)(5)](#_DxCrossRefBm2056272046). (b) The stall warning may be furnished either through the inherent aerodynamic qualities of the sailplane (e.g. buffeting) or by a device that will give clearly distinguishable indications. (c) The stall warning must begin: (1) at a speed between 1.05 VS1 and 1.1 VS1, or (2) between 2 and 5 seconds before the stall occurs when longitudinal control is moved at a pace corresponding to approximately 2 km/h per second rate of reduction of speed and must continue until the stall occurs. (d) Compliance with 22.207(a) through (c) is not required for a sailplane, a self-launching powered sailplane with the engine stopped, or a self-sustaining powered sailplane with the engine stopped or running if the following are met with air brakes, wing-flaps and landing gear in any normal position: (1) recovery from a stall is prompt in both straight and turning flight; (2) when a stall occurs from straight flight: (i) it is possible to produce and correct roll by using the ailerons, the rudder being held neutral; and (ii) no appreciable wingdropping occurs when both ailerons and rudder are held natural; (3) when a stall occurs in a coordinated 45° banked turn, any subsequent rolling or yawing motion is not rapid and is readily controllable.