Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Confusion; Situational Awareness
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Provided Assistance; Air Traffic Control Issued New Clearance; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Took Evasive Action; Flight Crew Overcame Equipment Problem
Environment - Non Weather Related; Aircraft
Descending for the RNAV approach on a 90 degree base 5 miles from the final approach fix descending to 2300 feet. Around 2500 feet the terrain warning sounds while in IMC conditions so we execute a terrain escape maneuver and climb out to 4000 feet. I informed ATC what we were doing and he informed us there was no terrain in that area. He then vectored us back around to the approach course and we landed. The terrain message sounded again at 2300 feet coming back around again but we knew this one was erroneous by talking to ATC and we were level about to intercept final approach course. The GPWS was then deferred once we got on the ground. Comply with the warning first and fly the airplane. There is plenty of time to figure out if it is an incorrect warning once clear of the occurrence.
CRJ Captain reported that a false terrain warning sounded during descent.