As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NEW BLADE INSTALLED 6/2/97. BEST TRACK OBTAINED 1.0 IPS VERTICAL AT 80 KNOTS. TRIED TO GET BLADES TO FLY TOGETHER FOR 1,128 HRS. PULLED BLADE AND PUT ANOTHER BLADE ON SHIP, TRACE NORMAL. INSTALLED BLADE S/N AFS-11686 ON ANOTHER SHIP TO TRY TO USE - COULD NOT TRACK. BLADES CROSS OVER IN HOVER! REPLACED S/N AFS-11686 WITH NEW BLADE FROM BHT AND TRACK NORMAL.