As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO PLATFORM AS A CONSEQUENCE OF THE LIGHT OF THE RIGHT START VALVE TURNED ON. THE START VALVE REPORT WAS DEFERRED IAW MEL 80-1. DURING OVERNIGHT CHECK, THE RIGHT START VALVE WAS REPLACED IAW MM 80-10-02, TESTED CORRECT.