As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 103 - MIA - ON CLIMB-OUT FROM TNT LEFT PROP SPEED INDICATOR STARTED DROPPING THEN SURGING. SHUT DOWN LEFT ENGINE AND DECLARED AN EMERGENCY INTO MIA. LANDED WITHOUT INCIDENT. ADJUSTED LEFT ENGINE BETA VALVE SETTING AND RERIGGED BOTH ENGINES FOR PROPER BETA VALVE SETTING. (M)