As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TURNED OFF UPPER RECIRC FAN AND ODOR WENT AWAY, ODOR PROMINENT BETWEEN ROWS 37+44. [07-27-07] ON ARRIVAL SWITCHED ON UPPER RECIRCULATION FAN AND CHECKED CONCERNED CABIN AREA. NO SMOKE ODOR NOTED. BUT FOUND CB ON PANEL P415 TRIPPED. SUSPECT UPPER RT RECIRCULATION FAN AT FAULT. REPLACED RECIRCULATION FAN 1 PER MM21-25-01. OPS NORMAL & CIRCUIT BREAKER STAYS IN.