Narrative:

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.

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Original NASA ASRS Text

Title: An A320 pilot reported receiving a GPWS alert while on ATC vectors and descending to an ATC assigned altitude.

Narrative: 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.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.