What was found
DURING DESCENT, RT PACK LIGHT ILLUMINATED, WOULD NOT RESET. PACK LIGHT ONLY ILLUMINATES WITH MASTER CAUTION AND LIGHT GOES OUT WITH MASTER CAUTION RESET PUSHED. ACFT GROUNDED. INITIAL EVALUATION IAW TASK 21-53, TASK 808, FOUND FAULT TO BE INTERMITTENT (NO PACK LIGHT) INSPECTED CABIN AND COCKPIT TEMP SENSOR FILTERS, FOUND FILTERS CLOGGED, R & R FILTERS IAW TASK 21-61-06-000-801. PERFORMED BITE CHECK OF RT PACK ZONE TEMP CONTROLLER, SHOWED TCV THIS PACK ONLY ON BIT AND PREVIOUS FLIGHT, NOT ON VERIFY. RESET CONTROLLER, THEN SHOWED NO FAULTS. INTERMITTENT FAULT REF TASK 21-62, TASK 831. GROUND VERIFICATION SUCCESSFUL.