Narrative:

Rear passenger access door was inadvertently left open on takeoff roll; and departed the aircraft prior to liftoff; takeoff was aborted prior to liftoff. The canopy-open warning light had been cancelled while taxiing; as the front canopy was then locked in the partially open position to allow cooler air to enter the cockpit. The front canopy was closed and locked just prior to beginning the takeoff roll; but the rear access door was overlooked. The two composite tabs on the access door; which attach to the hinges; snapped and the access door blew off without impacting the aft fuselage or tail. Damage was limited to the access door and its support rod.

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Original NASA ASRS Text

Title: DA40-180 pilot reported he failed to close the rear passenger access door and it departed the aircraft on takeoff roll. Takeoff was aborted.

Narrative: Rear passenger access door was inadvertently left open on takeoff roll; and departed the aircraft prior to liftoff; takeoff was aborted prior to liftoff. The canopy-open warning light had been cancelled while taxiing; as the front canopy was then locked in the partially open position to allow cooler air to enter the cockpit. The front canopy was closed and locked just prior to beginning the takeoff roll; but the rear access door was overlooked. The two composite tabs on the access door; which attach to the hinges; snapped and the access door blew off without impacting the aft fuselage or tail. Damage was limited to the access door and its support rod.

Data retrieved from NASA's ASRS site as of July 2013 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.