Narrative:

On the night of jan/xa/03, I was operating air carrier X flight from atl to msp. While taking the runway after being cleared onto hold, my copilot told me we had a cockpit door light illuminated. Knowing and seeing that the door was physically closed and considering our position on the active runway, I made the decision to proceed and handle the light after takeoff. We were immediately cleared for takeoff, and just into our initial power-up and aircraft movement, the cockpit door sprung open. I immediately retarded the throttles and instructed the copilot to notify the tower that we were discontinuing the takeoff and to request to clear at the first available turnoff to get back into sequence, which we did. After clearing the runway, we discovered the problem -- the kill switch on the door frame had not been switched on. We reset the system and continued with our flight. With the new doors, a change in the checklist is needed to prevent this, and ironically, upon investigating, I found out a change is already in progress. Supplemental information from acn 572597: after clearing the runway, we discovered the red guarded kill switch on the door frame had not been switched on.

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Original NASA ASRS Text

Title: A B737-800 PIC ABORTS HIS TKOF AT LOW SPD AFTER THE NEW SECURITY COCKPIT DOOR LIGHT HAD INDICATED THAT IT WAS UNLATCHED AND THEN POPPED OPEN UPON PWR APPLICATION AT ATL, GA.

Narrative: ON THE NIGHT OF JAN/XA/03, I WAS OPERATING ACR X FLT FROM ATL TO MSP. WHILE TAKING THE RWY AFTER BEING CLRED ONTO HOLD, MY COPLT TOLD ME WE HAD A COCKPIT DOOR LIGHT ILLUMINATED. KNOWING AND SEEING THAT THE DOOR WAS PHYSICALLY CLOSED AND CONSIDERING OUR POS ON THE ACTIVE RWY, I MADE THE DECISION TO PROCEED AND HANDLE THE LIGHT AFTER TKOF. WE WERE IMMEDIATELY CLRED FOR TKOF, AND JUST INTO OUR INITIAL PWR-UP AND ACFT MOVEMENT, THE COCKPIT DOOR SPRUNG OPEN. I IMMEDIATELY RETARDED THE THROTTLES AND INSTRUCTED THE COPLT TO NOTIFY THE TWR THAT WE WERE DISCONTINUING THE TKOF AND TO REQUEST TO CLR AT THE FIRST AVAILABLE TURNOFF TO GET BACK INTO SEQUENCE, WHICH WE DID. AFTER CLRING THE RWY, WE DISCOVERED THE PROB -- THE KILL SWITCH ON THE DOOR FRAME HAD NOT BEEN SWITCHED ON. WE RESET THE SYS AND CONTINUED WITH OUR FLT. WITH THE NEW DOORS, A CHANGE IN THE CHKLIST IS NEEDED TO PREVENT THIS, AND IRONICALLY, UPON INVESTIGATING, I FOUND OUT A CHANGE IS ALREADY IN PROGRESS. SUPPLEMENTAL INFO FROM ACN 572597: AFTER CLRING THE RWY, WE DISCOVERED THE RED GUARDED KILL SWITCH ON THE DOOR FRAME HAD NOT BEEN SWITCHED ON.

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.