What was found
DURING STALL TEST AT 120 KIAS, EXPERIENCED AN UNCOMMANDED, UNCONTROLLED RT BANK. NO STALL HORN, STICK SHAKER OR PUSHER IND. APPROX 90 DEG BANK, A/C ROLLED FURTHER RT, & APPROX 140 DEG BANK, A/C ROLLED TO RT AGAIN. CONTINUED ROLL AFTER PASSING INVERT. RECOVERED AT APPROX 180 KIAS, 3000 FT LOWER ALT. STALL VALVE LIGHTS ON DURING PITCH AT 40 DEG BELOW HORIZ. LANDED W/FLAPS 0 DEG. NO FURTHER EVENTS NOTED. MX CHANGED: R&R ALL VORTEX GENS, AILERONS X-RAYED FOR MOISTURE, STALL TRIGGER ADJUST TO NOMINAL, R&R WING VENT TUBE, R&R RT AOA VANE, ELEVATORS RIGGED, R&R LT ELEVATOR CENTER HINGE BEARING. R&R LT AILERON OTBD HINGE BEARING, & R&R RT FLAP OTBD FWD FAIRING. FLT TEST GOOD & A/C RETURNED TO SERVICE.