As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK LIGHT ILLUMINATED AS WE STARTED DESCENT. LIGHT EXTINGUISHED AFTER PRESSING TRIP RESET BUTTON. GROUNDED-YES. REMOVED AND REPLACED THE RT RAM AIR ACTUATOR, REF B737-800 AMM 21-51-21-400-801. OPERATIONS CHECK GOOD. THIS CLEARS MEL 21-5C. C/N 29005538 REMOVED. ALL SPECIAL PROCEDURES REVERSED AND ALL PLACARDS REMOVED. SEAMC MARK NOTIFIED.