A319
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 162
Workload
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Fuel Issue
Flight Crew Diverted
Aircraft; Human Factors
While en route; FL370; halfway; FMGC 2 failed. FO (First Officer) performed system reset with no luck. Captains FMGC displayed independent operation; while FO had nothing. 1FD1 was displayed; so FO was slaved to Captain. FO unable to use FMGC; ACARS was only available. Weather at time was 300 and 1. We continued and both Captain and FO had no concerns about completing the approach and normal landing. ATC vectored us to ILS 22; short turn 10 mile final. Went to arm the approach; approach button inop; unable to couple to the ILS. Only thing to do kick off autopilot; raw data hand flown. This was all by surprise. FO had nothing on his instruments; looked to mine and helped to about 400 ft when my comfort level of safety was exceeded. Went around; needed VMC weather. [Diversion airport] was chosen for good weather and passenger care. Declared min fuel and asked for priority handling. We canceled min fuel as we approached. Landed without incident.
A319 Captain reported diverting to an alternate after loss of FMGC Number 2.