As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON RECALL DURING AFTER START CHECKLIST MASTER CAUTION ILLUMINATED AIR CONDITIONING ANNUNCIATOR FOR LEFT PACK LIGHT ILLUMINATION ON OVERHEAD PANEL. ALL LIGHTS RESET PER CHECKLIST BY PUSHING MASTER CAUTION RESET BUTTON. GROUNDED - YES. REF FIM TASK 21-53 TASK 803, NR 1 PZTC BITE SHOWS "CONTROLLER FAULT RAM AIR" HARD FAIL. REMOVED AND REPLACED NR 1 PZTC IAW AMM 21-61-20/401. PZTC BITE TESTED GOOD W/O FAULTS. VERIFIED LEFT PACK OPS CHECKED NORMAL ON GND W/O FAULTS.