What was found
IN CRUISE, NR 1 ENGINE BEGAN TO BACKFIRE, POWER REDUCED RETURNED TO DEPARTURE AIRPORT AND LANDED. FOUND NR 1 CYLINDER CRACKED AND EXHAUST PUSHROD BROKEN CYLINDER AND PUSHROD REPLACED AND AIRCRAFT RETURNED TO SERVICE. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
IN CRUISE, NR 1 ENGINE BEGAN TO BACKFIRE, POWER REDUCED RETURNED TO DEPARTURE AIRPORT AND LANDED. FOUND NR 1 CYLINDER CRACKED AND EXHAUST PUSHROD BROKEN CYLINDER AND PUSHROD REPLACED AND AIRCRAFT RETURNED TO SERVICE. (M)