What was found
AIRCRAFT WAS GROUNDED: SMOKE AND ODOR REPORTED BY INFLIGHT CREW AT SEAT ROW 26 AFT INTO THE GALLEY. A BURNING RUBBER ODOR MOST NOTICABLE NEAR SIDEWALLS, STARTING SHORTLY AFTER TAKEOFF. MAINTENANCE ACCOMPLISHED TASK CARD 26L00021001 SMOKE/ ODOR FUMES TROUBLE SHOOTING AND FOUND AFT CARGO COMPARTMENT VENTILATION EXTRACTION FAN AT FAULT. REPLACED AFT CARGO COMPARTMENT VENTILATION EXTRACTION FAN PER AMM 21-28-54. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ODOR NOTED IN AIRCRAFT.