As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENG SHORT TIME FAULT MSG 73-30312 THE START SWITCH SIGNAL AND ARINC BUS DATA DISAGREE. GROUNDED - YES. REMOVED AND REPLACED #2 ENG START SWITCH REF MM 80-11-00. PERFORMED EEC TEST AND NO FAULTS, TEST PASS REF MM 73-21-00. PERFORMED START SWITCH TEST REF MM 80-11-00-730-801-F00, OPS TEST PASS. EEC BITE TEST RECENT FAULTS NO FAULT FOR LEG 0. THIS CLEARS PLT DEFERRAL.