What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Pilot departed dvt on an IFR flight plan. While waiting for departure release from ATC the entrance door was opened for some fresh air. When released for takeoff the door was closed and presumed locked properly. After the aircraft was airborne the door popped open. The passenger next to the door was very excited and the pilot could not get the door closed and was very busy with ATC while trying to fly the IFR departure procedure. The pilot notified ATC that he needed an immediate landing back to the departure airport. He stated that with the passenger being extremely excited he was somewhat distracted. He was at gross weight and decided to fly a little faster on final approach, not being sure what the performance issues involved with the open door. He touched down a little fast and did not apply heavy braking, trying not to lock up the tires. He underestimated his aircraft stopping ability and ran off the end of the runway causing minor damage to his aircraft.
As the FAA filed it
(-23) PILOT DEPARTED DVT ON AN IFR FLIGHT PLAN. WHILE WAITING FOR DEPARTURE RELEASE FROM ATC THE ENTRANCE DOOR WAS OPENED FOR SOME FRESH AIR. WHEN RELEASED FOR TAKEOFF THE DOOR WAS CLOSED AND PRESUMED LOCKED PROPERLY. AFTER THE AIRCRAFT WAS AIRBORNE THE DOOR POPPED OPEN. THE PASSENGER NEXT TO THE DOOR WAS VERY EXCITED AND THE PILOT COULD NOT GET THE DOOR CLOSED AND WAS VERY BUSY WITH ATC WHILE TRYING TO FLY THE IFR DEPARTURE PROCEDURE. THE PILOT NOTIFIED ATC THAT HE NEEDED AN IMMEDIATE LANDING BACK TO THE DEPARTURE AIRPORT. HE STATED THAT WITH THE PASSENGER BEING EXTREMELY EXCITED HE WAS SOMEWHAT DISTRACTED. HE WAS AT GROSS WEIGHT AND DECIDED TO FLY A LITTLE FASTER ON FINAL APPROACH, NOT BEING SURE WHAT THE PERFORMANCE ISSUES INVOLVED WITH THE OPEN DOOR. HE TOUCHED DOWN A LITTLE FAST AND DID NOT APPLY HEAVY BRAKING, TRYING NOT TO LOCK UP THE TIRES. HE UNDERESTIMATED HIS AIRCRAFT STOPPING ABILITY AND RAN OFF THE END OF THE RUNWAY CAUSING MINOR DAMAGE TO HIS AIRCRAFT.