ACFT EQUIPMENT PROBLEM; SEVERE.

Narrative

ON TAKEOFF AND IMMEDIATELY UPON ROTATION; STICK SHAKER ACTIVATED SIMULTANEOUSLY WITH ILLUMINATION OF STALL WARNING; STALL IDENT; FOLLOWED BY THE AILERON/ELEVATOR DISCONNECT LIGHTS. WE QUICKLY DETERMINED THAT THE ACFT WAS MAINTAINING THE PROPER CLIMB PROFILE AND WAS FULLY CTLABLE. WE DECIDED TO REMAIN BELOW THE OVERCAST; AND REQUESTED A RETURN TO THE AIRPORT. AFTER PERFORMING THE APPROPRIATE CHECKLISTS; THE STICK SHAKER WAS DISABLED; AND WE PERFORMED A NORMAL APPROACH AND LANDING WITHOUT FURTHER DIFFICULTY. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: RPTR STATES NEVER DID REALLY DETERMINE WHAT WAS WRONG. MAINT SPENT ALL NIGHT CHECKING. FINALLY PULLED ALL BLACK BOXES RELATED TO THE SYSTEMS INVOLVED AND REPLACED THEM. NTSB REPRESENTATIVE PRESENT BECAUSE TWR INCORRECTLY REPORTED AILERON FLUTTER. SWITCH TO SOP STALL WARNING IS STICK SHAKER RELEASE. AILERON DISCONNECT ACTUALLY ALLOWS CABLE TO STRETCH SO PLT GETS PROPER FEEL. RPTR FEELS DISCONNECT OCCURRED BECAUSE OF EXCESS VIBRATION OF AIRFRAME. OTHERWISE AIRPLANE FLEW WELL. FA'S KNEW SOMETHING WAS WRONG BECAUSE OF VIBRATION AND REMAINED SEATED.