What was found
(CAN) RETAINER FOR VERNIER DRIVE COUPLING WORN ON ITS FLATS, ALLOWING VERNIER TO SLIP AND THEREFORE (ENGINE) TIMING TO CHANGE. OVERHAUL SHOPS HAVE BEEN NOTIFIED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) RETAINER FOR VERNIER DRIVE COUPLING WORN ON ITS FLATS, ALLOWING VERNIER TO SLIP AND THEREFORE (ENGINE) TIMING TO CHANGE. OVERHAUL SHOPS HAVE BEEN NOTIFIED.