As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO PLATFORM DUE TO DURING START RT ENG IGNITION FAILED WITHOUT EGT. PERFORMED REVISION TO IGNITION SYS IAW AMM 74-21-01, DETECTING RT IGNITION FAILED, SO THE RT ENG IGNITION WAS ENABLED IAW AMM 74-21-01 & LT ENG IGNITION WAS OUT OF SERVICE & DEFERRED IAW MEL 74-1-2-B CAT B. DURING TRANSIT CHECK, THE LT IGNITION LEAD WAS REPLACED IAW AMM 74-21-02. TESTED CORRECT & THE REPORT WAS CLOSED.