What was found
CARBURETORS THAT ARE USED ON HELICOPTER HAVE A FLOAT HINGE THAT IS RESTING ATO P OF THE ALTITUDE BELLOWS CAUSING FUEL TO CUT OFF OR TOO SLOW ENTERING CARBURETOR. SUBMITTER RECOMMENDED ALERT OR AD BECAUSE THE NEWLY DESIGNED POLYMER FLOAT INTERFERES WITH THE ALTITUDE BELLOWS WHICH MAY CAUSE NO START OR SUDDEN STOPPAGE. NO KNOWN SERVICE BULLETINS EXIST.