Narrative:

The PIC was in the right seat, I was performing the takeoff from the left. We had asked for a slight delay on the runway to check our radar and were advised to take a short delay for traffic inbound on the approach. Shortly after takeoff power was set, the cockpit door flew open. I waited for the PIC to call the abort, but there was no callout. Finally he did call for me to slowly bring the power back and he called the tower. We were unable to exit the runway quickly because of the delay in call for abort. As a result the plane behind us on the approach had to go missed. This event occurred approximately 12 hours after our first flight of the day. The entire day was low IFR and the PIC stress level was high. The major problem in this incident was the lack of clear communication between myself and the PIC.

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Original NASA ASRS Text

Title: A CPR SMT ABORTED ITS TKOF WHEN THE DOOR CAME OPEN.

Narrative: THE PIC WAS IN THE R SEAT, I WAS PERFORMING THE TKOF FROM THE L. WE HAD ASKED FOR A SLIGHT DELAY ON THE RWY TO CHK OUR RADAR AND WERE ADVISED TO TAKE A SHORT DELAY FOR TFC INBOUND ON THE APCH. SHORTLY AFTER TKOF PWR WAS SET, THE COCKPIT DOOR FLEW OPEN. I WAITED FOR THE PIC TO CALL THE ABORT, BUT THERE WAS NO CALLOUT. FINALLY HE DID CALL FOR ME TO SLOWLY BRING THE PWR BACK AND HE CALLED THE TWR. WE WERE UNABLE TO EXIT THE RWY QUICKLY BECAUSE OF THE DELAY IN CALL FOR ABORT. AS A RESULT THE PLANE BEHIND US ON THE APCH HAD TO GO MISSED. THIS EVENT OCCURRED APPROX 12 HRS AFTER OUR FIRST FLT OF THE DAY. THE ENTIRE DAY WAS LOW IFR AND THE PIC STRESS LEVEL WAS HIGH. THE MAJOR PROB IN THIS INCIDENT WAS THE LACK OF CLEAR COM BTWN MYSELF AND THE PIC.

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.