What was found
FLT 312 - SHUTDOWN NR 1 ENGINE AT 1830Z DUE TO BACKFIRING IN RICH AND MANUAL LEAN. AIRCRAFT FERRIED TO ANC FROM ENM. MX REPLACED NR 13 CYLINDER ASSY DUE TO CRACKED HEAD. AIRCRAFT RETURNED TO SERVICE. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT 312 - SHUTDOWN NR 1 ENGINE AT 1830Z DUE TO BACKFIRING IN RICH AND MANUAL LEAN. AIRCRAFT FERRIED TO ANC FROM ENM. MX REPLACED NR 13 CYLINDER ASSY DUE TO CRACKED HEAD. AIRCRAFT RETURNED TO SERVICE. (M)