A320
Flight Crew Last 90 Days 202; Flight Crew Total 1428; Flight Crew Type 1428
Communication Breakdown; Situational Awareness
Inflight Event / Encounter CFTT / CFIT
Flight Crew Took Evasive Action
Airspace Structure; Human Factors; Procedure
We were on RADAR vectors with Approach given a descent down to 4;400 ft. on the eastern side of the airport. Nearing the bottom of the descent hearing the '2500 ft.' automatic call got my attention and shortly after that while leveling at our assigned altitude I heard the 'TERRAIN; TERRAIN' aural warning so I immediately disconnected the autopilot and pitched up until the warning had stopped only a few hundred feet to my knowledge. Shortly after that we got a new descent to 3;000 ft. with Approach and followed up with an uneventful Visual Approach. I inquired the Captain why he didn't mention the event to ATC after landing as he was Pilot Monitoring; but didn't really get a good answer.
An A320 pilot reported receiving a GPWS alert while on ATC vectors and descending to an ATC assigned altitude.