Narrative:

Uneventful preflight; checklists; pushback; taxi and takeoff on first leg of four total on the last day of a three-day trip until receiving an ACARS message from dispatch at (time) that read 'your ops agent from ZZZ just called to say they neglected to give you hazmat paperwork to sign. You have oxygen cylinders onboard. 5 pieces totaling 280 lb.' on arrival at the gate in ZZZ1; the faxed hazmat paperwork was signed by the captain. Out time: XX18Z. Takeoff time: XX24Z. Notification: XX36Z. The crew were completely unaware of the hazmat onboard until notified by dispatch. Once the discrepancy was discovered the ops agent made a timely call to dispatch who contacted the chief pilot on call and the [company communications system]. Attention to detail from the ops agent or the agents responsible for supplying the paperwork to the ops agent would have mitigated this discrepancy.

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Original NASA ASRS Text

Title: B737-700 First Officer reported no pre-departure notification or documents of onboard hazmat shipment provided to the flight crew.

Narrative: Uneventful preflight; checklists; pushback; taxi and takeoff on first leg of four total on the last day of a three-day trip until receiving an ACARS message from Dispatch at (time) that read 'your Ops agent from ZZZ just called to say they neglected to give you hazmat paperwork to sign. You have oxygen cylinders onboard. 5 pieces totaling 280 lb.' On arrival at the gate in ZZZ1; the faxed hazmat paperwork was signed by the Captain. Out time: XX18Z. Takeoff Time: XX24Z. Notification: XX36Z. The crew were completely unaware of the hazmat onboard until notified by Dispatch. Once the discrepancy was discovered the Ops Agent made a timely call to Dispatch who contacted the Chief Pilot on call and the [Company Communications System]. Attention to detail from the Ops Agent or the agents responsible for supplying the paperwork to the Ops Agent would have mitigated this discrepancy.

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.