Narrative:

Operations called me and asked if I had the flight release from our previous flight. My first officer informed me he did not have that release and assumed I did since I implied I was going inside to operations. I told my first officer I thought he went to operations for the release because I did not see him on the aircraft and therefore I decided not to go inside. It was not until we landed at our next station and operations called that we both realized we unknowingly left our release behind. A simple question as to who has the release instead of taking each other for granted would have prevented this situation. Supplemental information from acn 232691: lack of communication between myself and the captain was the primary reason for the oversight.

Google
 

Original NASA ASRS Text

Title: MDT FLC DEPARTS DEP ARPT WITHOUT HAVING SIGNED OR OBTAINED FLT RELEASE PAPERS.

Narrative: OPS CALLED ME AND ASKED IF I HAD THE FLT RELEASE FROM OUR PREVIOUS FLT. MY FO INFORMED ME HE DID NOT HAVE THAT RELEASE AND ASSUMED I DID SINCE I IMPLIED I WAS GOING INSIDE TO OPS. I TOLD MY FO I THOUGHT HE WENT TO OPS FOR THE RELEASE BECAUSE I DID NOT SEE HIM ON THE ACFT AND THEREFORE I DECIDED NOT TO GO INSIDE. IT WAS NOT UNTIL WE LANDED AT OUR NEXT STATION AND OPS CALLED THAT WE BOTH REALIZED WE UNKNOWINGLY LEFT OUR RELEASE BEHIND. A SIMPLE QUESTION AS TO WHO HAS THE RELEASE INSTEAD OF TAKING EACH OTHER FOR GRANTED WOULD HAVE PREVENTED THIS SIT. SUPPLEMENTAL INFO FROM ACN 232691: LACK OF COM BTWN MYSELF AND THE CAPT WAS THE PRIMARY REASON FOR THE OVERSIGHT.

Data retrieved from NASA's ASRS site as of July 2007 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.