LR45 flight crew reported diverting and landing safely after experiencing multiple system anomalies that led to a precautionary shutdown of the left engine.
Synopsis
LR45 flight crew reported diverting and landing safely after experiencing multiple system anomalies that led to a precautionary shutdown of the left engine.
Narrative
Reposition flight from ZZZ part 91 to ZZZ1. Normal departure out of ZZZ; about 2 hours into our flight we had an intermittent L ENGINE CHIP on the L/H Engine. That eventually stayed illuminated over a 10 minute time frame. At the initial indication of the L ENGINE CHIP CAS; we ran the engine chip CAS message checklist in the QRH (Quick Reference Handbook). Briefed to land at ZZZ3 as we had maintenance available there; additionally briefed if any secondary indication occurred on the L/H engine we would divert to ZZZ. Shortly After running the QRH for the chip indication. We had secondary indications. First indication being L ESS BUS VOLTS CAS Message illuminated. At that time we diverted to ZZZ and began our descent. During our descent multiple CAS messages began to illuminate. During this time our voltage on the L/H side began to drop. Eventually the pilot's side PFD & DU failed due to loss of power on the L/H side. Bus ties did not close automatically or when the bus tie switch was depressed. Additionally Comm 1 failed for PIC and SIC swapped to comm 2. During this time we had blaring aural feedback from comm 1. Pic was unable to communicate with ATC Communication with ATC continued from Comm 2 Through SIC side.Between 15;000 and 12;000 ft; we initiated a precautionary engine shutdown due to oil pressure being below 50 PSI; EICAS indicated 45 PSI; PIC performed the engine shutdown checklist and initiated engine shut down and completed single engine approach and landing checklists. Spoilers were inop; but landing gear and flaps functioned normally during approach. Made an uneventful landing and exited runway XXR onto Bravo where we were met with ARFF (Airport Rescue and Firefighting). No damage to aircraft or injuries reported. Aircraft has been turned over to Maintenance personnel for further investigation.
Second reporter narrative
At 40;000 ft in cruise; southwest of City X; a left engine chips light illuminated with no secondary indications. Ran QRH (Quick Reference Handbook) procedure and decided to divert to ZZZ3 for maintenance. Within ten minutes; the essential bus volts caution light came on and voltage dropped to 17 and amps zero. We let ATC knows we would need to divert to ZZZ at this time. Left PFD; DU; along with the spoilers and autopilot. [Priority handling] was now requested. First officer continued to hand fly at this point; then all audio failed on the Captains side. The First Officer assumed the radios as well as flying. I secured what systems I could; and switched the trim to secondary as primary had failed.We were vectored to ZZZ for a visual approach to [Runway] XXR. Landing gear and flaps operated normally and landing was uneventful. We exited left off the runway and was met by several ARFF (Airport Rescue and Firefighting) trucks. We shut down there and exited the aircraft as nose wheel steering was inoperative.No damage to the aircraft and no injuries to the crew. The aircraft was towed to the FBO for maintenance.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.