As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING T/C 78273000 ENG 1 LOGGED SHORT TIME FAULT 73-30311 THE START SWITCH SIGNAL AND BUS DATA DISAGREE FOR LEG 2. ACFT GROUNDED. PERFORMED FIM TASK 73-24-00-810-813 VERIFIED NR 1 ENG START SWITCH WAS FAULTY. REMOVED NR 1 ENG START SWITCH REF 80-11-00-000-801. INSTALLED START SWITCH REF 80-11-00-400-801. PERFORMED OPS TEST REF 80-11-00-730-801. GROUND RAN NR 1 ENG SYS CKS NORMAL.