As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE, RT IGNITION INOPERATIVE. ACFT GROUNDED. PERFORMED IGNITION SYS AUDIBLE TEST ON RT AND LT SEVERAL TIMES. FOUND RT IGNITER INTERMENT. SOUNDED DIFFERENT EVERY TIME REF74-00-00-750-801-F00. REMOVED RT MAIN IGNITER PLUG AND INSPECTED IT. FOUND THE TIPS HAVE CRACKS AND DAMAGED REF MM 74-21-02. INSTALLED NEW MAIN RT IGNITER PLUG. OPS CK NORMAL. STARTED ENG NR 1 SEVERAL TIMES ON RT IGNITION REF MM 74-21-02-200-801-F00.