As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT ENG PIMU FAULT MESSAGES EEC CHANNEL A FAULT CAT 2, EEC CHANNEL A TCC FD-BK FAIL, EEC CHANNEL B FAULT CAT 2 AND EEC CHANNEL B TCC FD-BK FAIL FOUND. REPLACED NR 2 ENG TURBINE CASE COOLING AIR VALVE ACTUATOR IAW AMM. PERFORMED PARTIAL RIG.