As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ELEVATOR PCU STATUS MESSAGE. ACP BLOCK 1 LT PCU MESSAGE RETURNED, NO TIME TO TROUBLESHOOT. ACCOMPLISHED FIM TO BLOCK 11. INSPECTION WIRE WAS NOT ABLE TO GO THROUGH INSPECTION HOLE. ALSO ACCOMPLISHED DIODE CHECK IN PCA TS5206. ONE DIODE FAILED RINGOUT CHECK-FAILURE OF DIFFERENTIAL PRESSURE SENSOR IN PCA. REPLACED OUTBOARD PCU ON LT ELEVATOR. OPS CHECKED, LEAK CHECKED GOOD. MESSAGE WENT AWAY.