As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RAM AIR DOOR FULL OPEN LIGHT ILLUMINATED ON LEFT PACK THE ENTIRE FLIGHT. NO PACK ISSUES NOTED. ACFT GROUNDED. TESTED THE LEFT RAM AIR SYSTEM AND FOUND ACTUATOR FAILING TO EXTEND THE FULL LIMIT. REMOVED AND REPLACED RAM AIR INLET ACTUATOR IAW AMM 21-51-21. GROUND VERIFICATION TEST SUCCESSFUL.