What was found
DURING FLIGHT, ROTORCRAFT DEVELOPED FLUTTER SOUND AND HIGHER THAN NORMAL TOT. LANDING MADE AND MECHANIC FOUND TACHOMETER BOX TO BE DEFECTIVE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING FLIGHT, ROTORCRAFT DEVELOPED FLUTTER SOUND AND HIGHER THAN NORMAL TOT. LANDING MADE AND MECHANIC FOUND TACHOMETER BOX TO BE DEFECTIVE.