As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRIOR TO DESCENT MASTER CAUTION RECALLED LEFT PACK LIGHT ILLUMINATED THE PACK LIGHT EXTINGUISHED WHEN MASTER CAUTION SYSTEM RESET. GROUNDED - YES. LEFT RAM AIR DOOR ACTUATOR LOGGED AS FAULTS LAST THREE FLIGHTS. REMOVED AND REPLACED LEFT HAND RAM AIR DOOR ACTUATOR, OPS NML REF B737-800 AMM 21-51-21-400-801. ACCOMPLISHED PACK/ZONE TEMP BITE TEST, ALL GREEN, BOTH PACKS OPS NML REF AMM 21-61-00-700-806-002.