As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - RT ENGINE TORQUE DROPPED TO ZERO IN FLIGHT. ENGINE REPORTED UNRESPONSIVE TO ENGINE CONTROL CHANGES. CREW DECLARED EMERGENCY AND CONTINUED TO STATION WITHOUT INCIDENT. MAINTENANCE DISCOVERED LEAKING PNEUMATIC PRESSURE SENSING TUBE ASSEMBLY FROM OVERSPEED GOVERNOR TO HMU. REPLACED TUBE ASSEMBLY. ENGINE GROUND CHECKED NORMAL, AIRCRAFT RETURNED TO SERVICE. (M)