What was found
FEATHERED NR 4 ENGINE AT 1912Z, LOST BMEP, BACKFIRING, RUNNING ROUGH. REPLACED NR 4 ENGINE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FEATHERED NR 4 ENGINE AT 1912Z, LOST BMEP, BACKFIRING, RUNNING ROUGH. REPLACED NR 4 ENGINE.