What was found
TEMPERATURE WAS IMPOSSIBLE TO CONTROL. MANY COMPLAINTS BY F/AS AND PAX. ACFT GROUNDED. PERFORMED BITE CK ON BOTH TEMP CONT, BOTH CK OK ALL GOS. OPERATED BOTH PACKS, FOUND FWD & AFT CABIN TAKES MUCH LONGER TO GET TO TEMP & CONT CAB CK OK. FOUND BOTH CABIN TEMP SENSOR FILTERS VERY DIRTY. CLEANED BOTH CABIN TEMP SENSORS FILTERS & ACCOP CABIN TEMP CONT OPS TEST, ALL TEST NORMAL, REF MM21-61-00 & 21-61-06. NO HISTORY 30 DAYS.