What was found
AT TAKEOFF, NR 1 ENGINE HAD UNCONTROLLABLE FLUCTUATIONS OF PLUS/MINUS 500 RPM. SHUT DOWN ENGINE AND RETURNED TO MAKE LANDING WITHOUT INCIDENT. MAINTENANCE REPLACED BRUSHBLOCK AND OPERATION THEN NORMAL. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AT TAKEOFF, NR 1 ENGINE HAD UNCONTROLLABLE FLUCTUATIONS OF PLUS/MINUS 500 RPM. SHUT DOWN ENGINE AND RETURNED TO MAKE LANDING WITHOUT INCIDENT. MAINTENANCE REPLACED BRUSHBLOCK AND OPERATION THEN NORMAL. (M)