A321
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Less Severe
Flight Crew Overcame Equipment Problem
Aircraft
Flight was on MEL for FMGC2 (Flight Management Guidance Computer). Prior to beginning descent FMGC1 failed; resulting in a FMGC dual failure. Followed SOPs; ATC vectored us for a visual approach. Flight landed without incident.
A321 Captain reported losing FMGC1 after being dispatched with FMGC2 deferred inoperative.