Narrative:

Inbound crew from ZZZ1 noted nothing abnormal about aircraft on arrival. Due to weather delay at ZZZ1 and subsequent maintenance delay for an unrelated fuel leak from left wing water drain; aircraft was cooled by APU bleed air for roughly 3 hours with nothing unusual noted. We switched off the APU roughly 15 minutes before departure and operated on engine bleed air with nothing abnormal noted. Shortly after takeoff; I began to notice an odor I would describe as a musty wet sock smell coming from the air ducts and commented to the captain. We both felt it may have been something in the air around ZZZ. Passing 10K; the lead flight attendant contacted us about a strange odor in the cabin. I asked him if he noted any smoke or other vapor; he did not. I asked if he or anyone else was feeling ill; he said no; but that the fight attendants in back felt hot. I turned all temperature control knobs full cold and the captain selected high flow. I told the lead flight attendant to notify us if he or anyone began to feel illl. I checked the air conditioning; electrical; bleed air; and pressurization pages; all were normal. We had no ECAM notifications and all systems appeared to be operating normally. The captain and I noted the odor seemed to lessen as we climbed and approached cruise altitude; so we continued. I elected to don my oxygen mask as a precaution. We both referenced the smoke/fumes & removal of smoke/fumes checklists (80.1 & 80.16) in the QRH as a precaution. We did not feel the situation warranted actions recommended in either checklist; particularly since the odor appeared to be dissipating. We continued to ZZZ1; but noted a return of the smell as we began our descent; so I made an mrm entry noting a musty wet sock smell. We landed uneventfully and I immediately started the APU; transitioned to APU bleed air; and shut down the engine bleeds. We noted an improvement in the smell after this was done. We informed maintenance & the outbound crews of our concerns. Maintenance informed us that this aircraft had a history of this situation. We noted there was nothing in the maintenance section of the flight plan regarding unusual odors and that the inbound crew did not note anything unusual.

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Original NASA ASRS Text

Title: A319 flight crew reported a fume event during initial climb which dissipated only to return on descent at destination.

Narrative: Inbound crew from ZZZ1 noted nothing abnormal about aircraft on arrival. Due to weather delay at ZZZ1 and subsequent maintenance delay for an unrelated fuel leak from left wing water drain; aircraft was cooled by APU bleed air for roughly 3 hours with nothing unusual noted. We switched off the APU roughly 15 minutes before departure and operated on engine bleed air with nothing abnormal noted. Shortly after takeoff; I began to notice an odor I would describe as a musty wet sock smell coming from the air ducts and commented to the Captain. We both felt it may have been something in the air around ZZZ. Passing 10K; the lead Flight Attendant contacted us about a strange odor in the cabin. I asked him if he noted any smoke or other vapor; he did not. I asked if he or anyone else was feeling ill; he said no; but that the Fight Attendants in back felt hot. I turned all temperature control knobs full cold and the Captain selected high flow. I told the lead Flight Attendant to notify us if he or anyone began to feel illl. I checked the air conditioning; electrical; bleed air; and pressurization pages; all were normal. We had no ECAM notifications and all systems appeared to be operating normally. The Captain and I noted the odor seemed to lessen as we climbed and approached cruise altitude; so we continued. I elected to don my oxygen mask as a precaution. We both referenced the smoke/fumes & removal of smoke/fumes checklists (80.1 & 80.16) in the QRH as a precaution. We did not feel the situation warranted actions recommended in either checklist; particularly since the odor appeared to be dissipating. We continued to ZZZ1; but noted a return of the smell as we began our descent; so I made an MRM entry noting a musty wet sock smell. We landed uneventfully and I immediately started the APU; transitioned to APU bleed air; and shut down the engine bleeds. We noted an improvement in the smell after this was done. We informed maintenance & the outbound crews of our concerns. Maintenance informed us that this aircraft had a history of this situation. We noted there was nothing in the maintenance section of the flight plan regarding unusual odors and that the inbound crew did not note anything unusual.

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.