Incident Description
During cruise flight at 12,000 feet, the flight crew of a DHC-8 aircraft observed a low oil pressure warning light. Approximately five seconds later, the right engine fire warning light illuminated. The crew confirmed the presence of a fire and discharged the engine fire extinguisher. The fire was initially extinguished but flared up again, prompting the crew to discharge the second fire extinguisher bottle. The fire was subsequently extinguished, and the aircraft completed a landing without further incident.
Post-Inspection Findings
Inspection following the event revealed broken oil lines to the number 6 and 7 bearings. Further investigation identified failed low pressure turbine blades due to internal corrosion. According to the manufacturer, new solid blades are under engineering evaluation.