SA-227 AC Metro III
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Aircraft Equipment Problem Critical
Air Traffic Control Issued New Clearance; Flight Crew Landed in Emergency Condition; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Landed As Precaution; Flight Crew Inflight Shutdown; Flight Crew Diverted
Aircraft
Pilot Flying heard engines drop out of synchronization and noticed a spike in torque on E2. A drop in torque resulted immediately followed rapidly by a low oil pressure light on the right. Pilot Flying pulled right power lever to verify the correct engine; then pilots agreed on the right stop and feather handle and pulled it. Pilot Flying commanded Pilot Not-Flying to request direct to [a nearby alternate]. Pilot Not-Flying completed all checklists and programmed the GPS for the appropriate visual approach. Aircraft was losing airspeed at FL180 so the crew requested 17;000 feet where the aircraft was able to maintain airspeed and altitude. Visually; we were clear of all terrain and the aircraft was performing well. The crew briefed other options if E1 were to fail. The resulting visual approach and landing were without incident.
[Report narrative contained no additional information]
SA-227 flight crew reported diverting to an alternate airport after shutting down #2 engine due to power loss and low oil pressure.