What was found
ON RECALL, THE RT PACK LIGHT ILLUMINATED AND CANCELED WITH THE MASTER CAUTION RESET. ACFT GROUNDED. REMOVED AND REPLACED RAM AIR EXHAUST ACTUATOR IAW AMM 21-51-27. TESTED THE ACTUATOR AND THE SYSTEM OPS AND INDICATIONS. THE AFT EXHAUST DUCT LOUVERS INTERMITTENT, STAYED HALF CLOSED ON THE AIR MODE FOR A FEW SECONDS THEN STAYED OPEN. OPS CHECKED THE RAM AIR INLET, EXHAUST ACTUATION. RAN OPS CHECK MULTIPLE TIMES. BOTH ACTUATORS ON THE NR 2 SIDE OPERATED NORMALLY. RAN FIM 21-53 TASK 810, INCLUDING BITE IAW AMM 21-61-00-700-806-802. NO FAULTS FOUND.