What was found
(CAN) DUE TO FINDING A BROKEN INTERNAL BAFFLE INSIDE THE NR 1 EXHAUST SILENCER, WE INITIATED AN INTERNAL INSPECTION OF THE SILENCER EVERY 100 HR INSPECTION INTERVAL. THIS BAFFLE WAS FOUND TO BE COMPLETELY BROKEN. THE EXHAUST SILENCER WAS REPLACED WITH A REPAIRED UNIT. IT IS BELIEVED THAT A BACKFIRE UPON STARTUP IS THE CAUSE OF THE BAFFLE DAMAGE AND HEATING AND COOLING OF THE EXHAUST SYSTEM. THE STUDENTS ARE REMINDED TO NOT OVER PRIME THE ENGINES AT START UP.