Saab 340 Undifferentiated
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 250; Flight Crew Total 1800; Flight Crew Type 800
Aircraft Equipment Problem Critical
Flight Crew Landed As Precaution; Flight Crew Inflight Shutdown; Flight Crew Returned To Departure Airport; General Maintenance Action
Aircraft
[After departure] at about 500 feet AGL; the left engine oil pressure light illuminated on the central warning panel in red with three chimes. The Captain was flying and asked me to run the emergency checklist. He continued flying and handled the radios. While I was running the low oil pressure checklist; I heard a loud explosion and the inlet turbine temperature went all the way to the red light and torque began to drop. The engine had failed with the positive auto coarsen and negative fire. We ran the engine failure memory item; then secured the engine with the checklist. We ran the single engine climb; in range; descent and before landing checklists and landed [back at departure airport] all within about 15 minutes. Since there was no fire; the Captain decided to taxi back to the ramp single engine and explain [to] maintenance what happened.
Saab 340 First Officer reported returning to departure airport after the left engine failed shortly after takeoff.