B787 flight crew reported calling out for fatigue after loss of oil pressure in the right engine. The flight crew performed an in flight shut down of the affected engine and diverted to make a precautionary landing.
Synopsis
B787 flight crew reported calling out for fatigue after loss of oil pressure in the right engine. The flight crew performed an in flight shut down of the affected engine and diverted to make a precautionary landing.
Narrative
At approximately 2.5 hours into Flight from ZZZ to ZZZ1; while en route and past our critical point; the right engine experienced a sudden loss of oil pressure; necessitating the activation of the appropriate checklist procedures. Consequently; the affected engine was promptly shut down in accordance with Standard operating procedures.Following the engine shutdown; the flight crew determined that the safest course of action would be to divert to ZZZ2. The flight proceeded to ZZZ2; where an uneventful single-engine landing was executed successfully; mitigating any potential risks associated with the in-flight engine failure.Upon arrival at ZZZ2; the Maintenance Team conducted a thorough inspection of the right engine to ascertain the root cause of the oil pressure loss. Initial findings indicate excessive contaminates in the engine chip detector resulting in total oil pressure loss in the right engine.As a consequence of the inflight [problem] and the subsequent stress endured by the crew; a decision was made to preventatively address crew fatigue. Considering the incident and the need for additional rest and recuperation; the crew was deemed unable to continue the flight to ZZZ1. This decision was taken in accordance with safety regulations and in the best interest of the crew and passengers. Unfortunately; upon landing the crew desk ordered us to continue to fly to ZZZ1 after this incident. Conclusion: Flight experienced a right engine oil pressure loss approximately 2.5 hours into the flight. The crew successfully executed the appropriate shutdown procedures; ensuring the safety of all onboard. An uneventful single-engine landing was accomplished at ZZZ2. The investigation into the root cause of the engine failure is underway. The crew's inability to continue the flight to ZZZ due to the stress and fatigue resulting from the inflight situation was a necessary precaution taken to prioritize safety.
Second reporter narrative
Engine failure over Ocean. Diversion to ZZZ2. At ZZZ2 this flight crew was scheduled to quick turn with different aircraft and continue flying to ZZZ1. Crew desk did not understand why we would not want to do this. The crew desk then asked if I wanted to call in fatigued and I agreed. Flight Operations Duty Manager agreed that we should not fly to ZZZ1; and to let the crew desk know what time we would be rested and available; which I did.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.