As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS BURNING SMELL AROUND ROW 10 AND AFT REPORTED BY 2 FLIGHT ATTENDENTS. MAINTENANCE PERFORMED JOB CARDS 26L00021001, 26L00021003, AND 26L00021004. FOUND #2 ENG ACOC LEAKING. REMOVED AND REPLACED #2 ENG ACOC IAW AMM 79-21-42-400-010-A. NO FURTHER ODORS NOTED.