Regional Jet 700 ER/LR (CRJ700)
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Confusion; Situational Awareness; Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Provided Assistance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Took Evasive Action; Flight Crew Overcame Equipment Problem; Flight Crew Became Reoriented; General Maintenance Action; General Flight Cancelled / Delayed
Aircraft
Approximately 9 miles north of the field; 3-4 miles east of the extended centerline for Runway XX at ZZZ; we were level at 2;000 ft. on a base leg for a visual approach to Runway XX in VMC. We received a terrain" caution; followed immediately with a "pull-up" terrain warning. The Captain disconnected the autopilot (AP) and initiated a climb to 2;500 ft.; and I notified ATC. There were no obvious obstructions or terrain near us - highest obstacle on the approach plate [was] 995 ft.; and I believe that was behind us. The terrain warning cleared as the Captain disconnected the AP and initiated the climb. We then proceeded back to 2000 ft. and completed the approach and landing into ZZZ. Unknown cause; possible EGPWS malfunction vs interference of unknown origin."
CRJ700 First Officer reported an EGPWS alert resulted in the Captain disconnecting the autopilot and continuing the approach to landing.