As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENG #1 OVSP FAIL DISPLAYED DURING HOVER. CIRCUIT BREAKER WAS RESET BY MAINTENANCE SEVERAL TIMES, BUT FAULT REMAINED. DURING TROUBLESHOOTING FOUND ENGINE #1 OVERSPEED CONNECTOR HAD PINS 4 AND 5 OPEN AND PINS 3 AND 2 NORMAL. PINS 4 AND 5 SHOULD READ 100 OHMS PLUS OR MINUS 20.0 IAW 77-14-00-750-801-A01. REMOVED AND REPLACED #1 ENGINE MAGNETIC SENSOR; MOC SUCCESSFULLY COMPLETED.