As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BRISTOW RECENTLY DISCOVERED A LOOSE JAM NUT ON AFT M/R SERVO INPUT ROD END DURING A SCHEDULED INSPECTION. THE JAM NUT IS THE SUBJECT OF FAA AD 2015-19-51, AD 2017-19-01 AND SIK AWL 300 HOUR INSPECTION ITEM 30A. THE INTENT OF THESE INSPECTIONS IS ‘. TO DETECT A LOOSE JAMNUT AND PREVENT FAILURE OF THE PUSHROD ASSEMBLY, LOSS OF M/R FLIGHT CONTROL, AND SUBSEQUENT LOSS OF CONTROL OF THE HELICOPTER. REPLACED CONTROL ROD IAW SIK AWL