As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ENGINE START SEQUENCE THE NR 2 ENG START SWITCH WOULD NOT REMAIN IN GROUND, CHECKED CB AND IT WAS POPPED (OUT). ACFT GROUNDED. FOUND ENGINE NR 2 START VALVE CB OPEN. RESET CB REF MM 20-62-01. CKD STARTER CONTROL VALVE CONNECTOR DP1202, NO DETECTS NOTED. ACCOMPLISHED FIM TASK 807, TASK 804. R & R 2 ENGINE START VALVE IAW AMM 80-11-03. REPAIR CONFIRMATION & GROUND VERIFICATION SUCCESSFUL AND LEAKS CKD GOOD.