Narrative:

Was unable to get flight plan en route on previous leg. Arrived in ZZZ with a maintenance problem with an hour to turn and depart. I did not sign the release prior to departure. We were both tired (5 days on with early east coast departures) and missed this one. The ACARS did not alert us to 'release not signed' as it normally would. Dispatch alerted us en route and flight landed in ZZZ2 uneventfully.

Google
 

Original NASA ASRS Text

Title: AN A320 CAPT RPTS NOT SIGNING THE FPR PRIOR TO DEP FROM THE ORIGINATING STATION.

Narrative: WAS UNABLE TO GET FLT PLAN ENRTE ON PREVIOUS LEG. ARRIVED IN ZZZ WITH A MAINT PROB WITH AN HR TO TURN AND DEPART. I DID NOT SIGN THE RELEASE PRIOR TO DEP. WE WERE BOTH TIRED (5 DAYS ON WITH EARLY EAST COAST DEPS) AND MISSED THIS ONE. THE ACARS DID NOT ALERT US TO 'RELEASE NOT SIGNED' AS IT NORMALLY WOULD. DISPATCH ALERTED US ENRTE AND FLT LANDED IN ZZZ2 UNEVENTFULLY.

Data retrieved from NASA's ASRS site as of January 2009 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.