Narrative:

Right as maintenance got off headset; the flight attendant called to have rude passenger removed and we got quite involved over this. It was a perfect distraction for me interrupting any chance I had of remembering that the doors were armed. The #1 flight attendant knew maintenance was going to come out; but she was involved with the passenger; maintenance; on the headset; didn't think to ask if we were disarmed; my first officer listening to the flight attendant discussion of the passenger. At the tail the supervisor told me afterward that they opened the stairs very carefully in case we were still armed. I think they should have run back and asked me on headset. Fortunately; our #2 flight attendant heard them coming and disarmed everything. When the aft stairs light illuminated; it dawned on me to call and tell her to disarm; which she was already doing. Hopefully we can learn something from this.

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Original NASA ASRS Text

Title: ALERT CABIN ATTENDANT DISARMS CABIN DOORS JUST BEFORE MAINT ATTEMPT TO BOARD MD80 THROUGH AFT ENTRY.

Narrative: RIGHT AS MAINT GOT OFF HEADSET; THE FLT ATTENDANT CALLED TO HAVE RUDE PAX REMOVED AND WE GOT QUITE INVOLVED OVER THIS. IT WAS A PERFECT DISTR FOR ME INTERRUPTING ANY CHANCE I HAD OF REMEMBERING THAT THE DOORS WERE ARMED. THE #1 FLT ATTENDANT KNEW MAINT WAS GOING TO COME OUT; BUT SHE WAS INVOLVED WITH THE PAX; MAINT; ON THE HEADSET; DIDN'T THINK TO ASK IF WE WERE DISARMED; MY FO LISTENING TO THE FLT ATTENDANT DISCUSSION OF THE PAX. AT THE TAIL THE SUPVR TOLD ME AFTERWARD THAT THEY OPENED THE STAIRS VERY CAREFULLY IN CASE WE WERE STILL ARMED. I THINK THEY SHOULD HAVE RUN BACK AND ASKED ME ON HEADSET. FORTUNATELY; OUR #2 FLT ATTENDANT HEARD THEM COMING AND DISARMED EVERYTHING. WHEN THE AFT STAIRS LIGHT ILLUMINATED; IT DAWNED ON ME TO CALL AND TELL HER TO DISARM; WHICH SHE WAS ALREADY DOING. HOPEFULLY WE CAN LEARN SOMETHING FROM THIS.

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.