Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 153
Situational Awareness
Deviation - Track / Heading All Types; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued Advisory / Alert; Flight Crew Took Evasive Action
Environment - Non Weather Related; Human Factors
On descent to 6;000 feet with vectors to final for ILS 35 into AVL we received an obstacle warning caution message. The obstacle was a tower directly in front of us. I (FO) leveled off the descent at 6;200 feet and deviated from course to avoid the tower. ATC confirmed that they also received and obstacle warning cation. We proceeded 'with see and avoid' procedures and then returned to our original vector for final with no further incident.The deviation was caused during descent by a tower triggering an obstacle caution message with both the aircraft and ATC. We leveled off the aircraft above our assigned descent altitude of 6;000 feet and deviated from our assigned vector to avoid the tower. Though ATC also received an obstacle caution they claimed the tower's height was 5;100 feet and should not have triggered the caution message. The MSA of the area was 7;600 feet. Since we were in VMC conditions we felt safe descending to the assigned altitude. We had the tower insight and were in the process of requesting a different vector when the caution was triggered; and we deviated from course for safety.
Air carrier First Officer reported getting an obstacle caution warning during descent due to a tower in the flight path. ATC stated that the tower height should not have caused any warnings.