EMB ERJ 145 ER/LR
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Flight Crew Diverted; Flight Crew Landed in Emergency Condition; Flight Crew Inflight Shutdown; General Declared Emergency
Aircraft
Air traffic control had assigned us airspeed of 280 knots; but then gave us normal speed. I acknowledged the instruction while the Captain advanced the thrust levers. Within a minute of moving the thrust levers forward; the captain noticed a spike of the Number 1 engine oil pressure to 140 PSI. After observing the oil pressure for a few seconds; the captain decided to retard the thrust lever on the Number 1 engine. As she retarded the thrust lever; I observed the oil pressure fluctuating between 99 PSI and 150 PSI. The pressure remained in the amber; approaching the red range; so the captain decided to turn off the Number 1 engine. She then told me to tell ATC that we were shutting off an engine and to declare an emergency. She disengaged the autopilot; trimmed the aircraft for single engine flight and called for the engine failure/precautionary checklist. While she was doing that; I quickly looked at the MFD to determine our position; and realized that ZZZ airport would be our best option. At that time; we were approximately 65 miles northwest of ZZZ. I communicated my thoughts to the Captain; and she agreed that ZZZ was our best option and told me to request direct to the airport. I declared an emergency and we were cleared to fly direct to the airport. I completed the engine failure/precautionary engine shutdown checklist; and all other checklists associated with that procedure. After the engine was secured and the start/stop selector was in the stop position; there were no other indications of fire or severe damage. We landed safely and without incident. I think all things considered; we worked very well as a crew. We communicated all thoughts to each other so that we had a shared mental model of the situation. The Flight Attendant and ATC were also kept in the loop so that everyone was fully aware of the situation and the plan. ATC also was a very big help in getting us to ZZZ and getting the plane on the ground as quickly as possible. If I had to do this whole thing over again; I would do everything exactly the same.
EMB145 First Officer describes a precautionary engine shutdown and diversion due to high engine oil pressure.