As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPOILERONS FAULT STATUS MESSAGE ILLUMINATED. NOTE: THIS OCCURRED ON THE GROUND. AFTER MDC INTERROGATION FOUND SECU 2A LABEL 350 CODE: 00402 CODE: LT IB PCU FAIL. SWAPPED SECU UNITS TO PUT 49-164-05 IN THE NR 1 POSITION AND PLACED PCU ON MEL 27-62-03. (K)