What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) On September 18, 2001, at approximately 1100, shortly after take-off from John Wayne airport, Santa Ana, California, a Bombardier challenger CL-600, N50PA, declared an emergency due to the aircraft main entry door opening in flight. The aircraft returned to John Wayne and landed safely with the entry door still attached and fully open. There were no injuries and only minor damage to the aircraft.
As the FAA filed it
(-23) ON SEPTEMBER 18, 2001, AT APPROXIMATELY 1100, SHORTLY AFTER TAKE-OFF FROM JOHN WAYNE AIRPORT, SANTA ANA, CALIFORNIA, A BOMBARDIER CHALLENGER CL-600, N50PA, DECLARED AN EMERGENCY DUE TO THE AIRCRAFT MAIN ENTRY DOOR OPENING IN FLIGHT. THE AIRCRAFT RETURNED TO JOHN WAYNE AND LANDED SAFELY WITH THE ENTRY DOOR STILL ATTACHED AND FULLY OPEN. THERE WERE NO INJURIES AND ONLY MINOR DAMAGE TO THE AIRCRAFT.