As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON PUSHING MASTER CAUTION RECALL "AIR COND" AND LEFT "PACK" LIGHT ILLUMINATES. UPON PUSHING MASTER CAUTION RESET, "PACK" LIGHT EXTINGUISHES. GROUNDED - YES. PERFORMED PZTC REF B737-900 FIM 21-62 TASK 801 FOUND L/H SRADA INLET FAULT. DUE TO FAULT HISTORY AND ACTUATOR MAKING AN AUDIBLE "GRINDING NOISE WHILE OPERATING", REMOVED AND REPLACED RAM AIR INLET ACTUATOR REF B737-900 AMM 21-51-21. OPS CHECK GOOD.