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 RIGHT ENGINE START, N2 REACHED 10% OF N2 AND DECREASED TO 0%. MAINTENANCE PERSONNEL PERFORMED AN INSPECTION IAW AMM 73-21-00 DETECTING THE STARTER DAMAGED. SO THE RIGHT ENGINE STARTER WAS REPLACED IAW AMM 80-11-01, TESTED CORRECT.