As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA INFLIGHT T1661/29MAR - EMERGENCY DECLARED ON DESCENT INTO SEA DUE TO LEFT ENGINE PRESSURE RATIO FLUX. UNABLE TO CONTROL ENGINE THRUST. LANDED SEA WITHOUT INCIDENT. REPLACED LEFT ENGINE PRESSURE RATIO TRANSMITTER. SYSTEM GROUND CHECKED NORMAL OPERATION.