Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Situational Awareness; Human-Machine Interface
Deviation - Altitude Overshoot; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued Advisory / Alert; Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Human Factors
While transitioning from the KENNO2 Arrival to the ILS Z RWY (Runway) 16R (After KLOCK and before BELBE); FMA kicked off VNAV and defaulted to CWS. As a result; the aircraft descended below 9;000 ft. MEA. PF (Pilot Flying) flying detected cause at approximately 7;800 ft.; leveled the aircraft and climbed to 8;000 ft. Shortly thereafter ATC queried our altitude. We didn't receive any other indications (Terrain warning; etc.)PF didn't remove discontinuity between KLOCK and BELBE. Aircraft continued descent towards 7;500 ft.; the altitude set in the FMA. PF/PNF (Pilot Not Flying) didn't sufficiently/simultaneously review the waypoints in the FMC.Authorized/conducted a visual approach without incident.
Air carrier First Officer reported not removing a discontinuity which resulted in the aircraft descending below the MEA during arrival to RNO airport.