What was found
(CAN)DURING COMPLIANCE WITH LYCOMING SERVICE BULLETIN 518C (INSPECTION OF THERMOSTATIC BYPASS VALVE) THE VERNATHERM CRIMP NUT WAS FOUND LOOSE. VERNATHERM VALVE REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN)DURING COMPLIANCE WITH LYCOMING SERVICE BULLETIN 518C (INSPECTION OF THERMOSTATIC BYPASS VALVE) THE VERNATHERM CRIMP NUT WAS FOUND LOOSE. VERNATHERM VALVE REPLACED.