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CS-VLA 49  Stalling speed

ED Decision 2003/18/RM

(a)                            VS0 is the stalling speed, if obtainable, or the minimum steady speed, in km/h (knots) (CAS), at which the aeroplane is controllable, with the -

(1)                            Power condition set forth in subparagraph (c);

(2)                            Propeller in the take-off position;

(3)                            Landing gear extended;

(4)                            Wing flaps in the landing position;

(5)                            Cowl flaps closed;

(6)                            Centre of gravity in the most unfavourable position within the allowable range; and

(7)                            Maximum weight.

(b)                            VS0 may not exceed 83 km/h (45 knots) (CAS).

(c)                            VS1 is the stalling speed, if obtainable, or the minimum steady speed, in km/h (knots), (CAS) at which the aeroplane is controllable with -

(1)                            Engine idling, throttle closed;

(2)                            Propeller in the take-off position;

(3)                            Aeroplane in the condition existing in the test in which VS1 is being used; and

(4)                            Maximum weight.

(d)                            VS0 and VS1 must be determined by flight tests, using the procedure specified in CS-VLA 201.