A320 captain reported a fume event during descent at destination.

Attributes
ACN	1738057
Time
Date	202003
Local Time Of Day	0001-0600
Aircraft 1
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	Pneumatic System
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor

Narrative:

I started the trip in ZZZ the crew that brought aircraft X in had a fume event on descent at 3;000 ft.; it was determined by maintenance that the problem was with pack 1 so; pack 1 was deactivated; during boarding we smelled it again with pack 2 running and APU; maintenance was called and the APU was deactivated.during descent through fl 210 we smelled it again with both engines running; both bleeds open; pack 1 off; APU off; pack 2 on.

Original NASA ASRS Text

Title: A320 Captain reported a fume event during descent at destination.

Narrative: I started the trip in ZZZ the crew that brought Aircraft X in had a fume event on descent at 3;000 ft.; it was determined by Maintenance that the problem was with Pack 1 so; Pack 1 was deactivated; during boarding we smelled it again with Pack 2 running and APU; Maintenance was called and the APU was deactivated.During descent through FL 210 we smelled it again with both engines running; both bleeds open; Pack 1 off; APU off; Pack 2 on.

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.