FAA incident report · Saab SF340A · Sioux City, IA · December 19, 1990
From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
NR1 engine developed torque fluctation. Returned. Replaced NR1 engine speed and torque sensor.
NR1 ENGINE DEVELOPED TORQUE FLUCTATION. RETURNED. REPLACED NR1 ENGINE SPEED AND TORQUE SENSOR.