As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING TC 78273000 FOUND NR 2 ENG SHORT TIME FAULT MSG NBR 75-20452 FOR VBV POSITION SIGNALS DISAGREE. GROUNDED - YES. IAW FIM 75-32 TASK 803 NR 2 ENG BITE HAS FAULTS 75-10452 AND 75-20452 VBV POS SIGNALS DISAGREE. THERE ARE MORE B CHANNEL HITS. EEC TEST AND ACTUATORS TEST PASS. REPLACED NR 2 ENGINE LT VBV ACTUATOR REF AMM 75-32-02/801, LEAK CHECK GOOD, NO FAULTS NOTED, GROUND VERIFICATION NOTED.