As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENGINE FAILED TO START. NORMAL MOTORING NZ TO Z25%, START LEVER TO IDLE WITH 500LB FUEL FLOW WITHOUT LIGHT OFF IN 15 SECOUNDS. GROUNDED - YES. ACCOMPLISHED TC N8474000 FOR #2 ENG IGNITER PLUGS REPLACEMENT. STARTED #2 ENG USING RIGHT IGNITER, ENGINE STARTS NORMALLY.