Canadian North B732 near Edmonton on Sep 7th 2014, engine shut down in flight

A Canadian North Boeing 737-200, registration C-GKCP performing flight 5T-9091 from Regina,SK to Edmonton,AB (Canada), had been enroute at FL360 and had just reached the top of descent into Edmonton when the crew reduced the engines to idle thrust, but received an overheat indication for the left hand engine (JT8D). The crew shut the engine down, discharged a fire bottle but the overheat indication did not extinguish. The second fire bottle was discharged, the overheat indication continued until after landing. The crew declared Mayday and continued for a safe landing. Attending emergency services found no trace of fire, unusual heat or smoke.

The Canadian TSB reported maintenance replaced the #1 engine overheat sense loop.

Maintenance reported the overheat sensor was "open", the sensor loop was replaced and an engine test run conducted which identified a minor bleed air leak that was rectified before the aircraft was returned to service.