As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON THE FIRST HOVER FLIGHT OF THE DAY. IN HOVER FLIGHT, THE ROTOR RPM BLEED OFF AND WOULD NO RECOVER. NOTIFIED MAINTENANCE OF THE PROBLEM. FUEL CONTROL WAS REPLACED IAW MM. AC RETURNED TO SEVICE UPON COMPLETION OF ALL FUNCTIONAL CHECKS. (K)