As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM: COCKPIT WILL NOT COOL. FOUND LT RECIRC FAN FILTER DIRTY. REMOVED AND REPLACED LT RECIRC FAN FILTER IAW AMM 21-25-01. OPS CHECKS NORMAL. LT RECIRCULATION FAN IN DUAL FAN SYSTEM DOES NOT OPERATE /LEFT FAULT CODE 212-040-41. ACCOMPLISHED FIM TASK 21-25 TASK 802 NO DEFECTS NOTED. ACCOMPLISHED RECIRCULATION SYSTEM OPERATIONAL TEST IAW AMM 21-25-00-710-802-002 OPS CHECKS NORMAL.