As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PACK LIGHT ILLUMINATED, WOULD NOT RESET WITH RECALL. RAM DOOR FULL OPEN LIGHT DID NOT EXTINGUISH. GROUNDED - YES. AFTER TROUBLESHOOTING IN ACCORDANCE WITH FIM 21-51 TASK 803, FOUND L/H RAM AIR DOOR ACTATOR AT FAULT. RELEASED PER MEL 21-5D. REMOVED AND REPLACED L/H RAM AIR INLET ACTUATOR. OPS CHECK GOOD REF B737-900 AMM 21-51-21/401. THIS CLEARS MEL 21-5D.