As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLIGHT RIGHT PACK LIGHT ILLUMINATED AND WAS RESET WITH MASTER CAUTION RESET BUTTON. PACKS OPERATE NORMALLY. GROUNDED - YES. ACCOMPLISHED PACK TEMP CONTROLLER BITE TEST VERIFIED # 2 CONTROLLER SHOWED RAM AIR ACTUATOR FAULT. REMOVED AND REPLACED RIGHT PACK RAM AIR ACTUATOR REF B737-900 AMM 21-51-21-000-801 AND AMM 21-51-21-400-801. GROUND VERIFICATION CK GOOD. REACCOMPLISHED BITE CK NO FAULTS NOTED REF B737-900 FIM 21-62 TASK 801. THIS CLEARS MEL 21-32B.