Narrative:

Flight was from phx to mdw. Takeoff time was XY15 am, phx local. When the crew arrived at the departure gate, the agent said we had an aircraft change. So we all went to the gate next door to the plane that we were originally supposed to take. The fuelers were fueling, catering was onboard doing their job. Everything was as it was supposed to be. I told the first officer that we needed to get a new release before we left because the one we had was the old aircraft. The lead flight attendant came to the cockpit with a maintenance problem in the back so I went back with maintenance to fix the problem. Meanwhile it was 5 mins prior to departure with about 50 people at the gate checking in with bags. So I went back to help the agents. We finally departed 10 mins late from the gate. Upon arrival at mdw I realized that I forgot to get the new release. Now it was too late. We left phx with a release with the wrong aircraft number on it. In the middle of the night the crew is tired before we get to the aircraft. Next time I will delegate the first officer to get the release changed and I will not worry so much with the passenger boarding. Let the agents do their job.

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Original NASA ASRS Text

Title: A B757 FLC DEPARTS AFTER AN ACFT CHANGE WITH THE RELEASE STILL INDICATING THE OLD ACFT NUMBER AT PHX, AZ.

Narrative: FLT WAS FROM PHX TO MDW. TKOF TIME WAS XY15 AM, PHX LCL. WHEN THE CREW ARRIVED AT THE DEP GATE, THE AGENT SAID WE HAD AN ACFT CHANGE. SO WE ALL WENT TO THE GATE NEXT DOOR TO THE PLANE THAT WE WERE ORIGINALLY SUPPOSED TO TAKE. THE FUELERS WERE FUELING, CATERING WAS ONBOARD DOING THEIR JOB. EVERYTHING WAS AS IT WAS SUPPOSED TO BE. I TOLD THE FO THAT WE NEEDED TO GET A NEW RELEASE BEFORE WE LEFT BECAUSE THE ONE WE HAD WAS THE OLD ACFT. THE LEAD FLT ATTENDANT CAME TO THE COCKPIT WITH A MAINT PROB IN THE BACK SO I WENT BACK WITH MAINT TO FIX THE PROB. MEANWHILE IT WAS 5 MINS PRIOR TO DEP WITH ABOUT 50 PEOPLE AT THE GATE CHKING IN WITH BAGS. SO I WENT BACK TO HELP THE AGENTS. WE FINALLY DEPARTED 10 MINS LATE FROM THE GATE. UPON ARR AT MDW I REALIZED THAT I FORGOT TO GET THE NEW RELEASE. NOW IT WAS TOO LATE. WE LEFT PHX WITH A RELEASE WITH THE WRONG ACFT NUMBER ON IT. IN THE MIDDLE OF THE NIGHT THE CREW IS TIRED BEFORE WE GET TO THE ACFT. NEXT TIME I WILL DELEGATE THE FO TO GET THE RELEASE CHANGED AND I WILL NOT WORRY SO MUCH WITH THE PAX BOARDING. LET THE AGENTS DO THEIR JOB.

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.