A319
Flight Crew Air Transport Pilot (ATP)
Confusion
Aircraft Equipment Problem Critical
Flight Crew Landed As Precaution; Flight Crew Diverted; Flight Crew Inflight Shutdown; General Maintenance Action
Aircraft
At cruise; FL340; our #2 engine lost oil quantity and pressure. This mechanical failure led us to shut down the engine and divert to [an alternate airport].Suspected scavenge pump or bearing seal failure.This was the first cruise level engine shutdown for both pilots on the Airbus. Although the engine oil quantity slowly decreased we didn't suspect oil failure. The aircraft does not produce an ECAM message for 0 quantity. The oil quantity is replaced by amber XXs leading us to initially suspect indicator failure. However we continued to monitor the pressure and it slowly started to decrease. At this point we knew we were looking at engine shutdown; but we're somewhat hesitant to shut it down without ECAM or checklist guidance. We do not receive training for engine shut downs without ECAM or checklist direction. Why not? Do we use master switch or Fire push button? Once the pressure decreased enough to set off the ENGINE OIL LOW PRESSUR ECAM the engine was immediately shut down in accordance with ECAM. We were ready to shut it down as we saw the situation deteriorating; but uncomfortably waited for the automation to catch up.Suggest adding engine failure at altitude to future training.
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A319 flight crew reported diverting to an alternate after shutting down #2 engine due to low oil quantity and pressure.