What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The helicopter departed dupage airfield after refueling and reported to the tower he wanted to check some instruments. After 4 to 5 minutes, the helicopter crashed into an open field without communicating with the tower while still in class d airspace. The cause of the crash is unknown.
As the FAA filed it
(-23) THE HELICOPTER DEPARTED DUPAGE AIRFIELD AFTER REFUELING AND REPORTED TO THE TOWER HE WANTED TO CHECK SOME INSTRUMENTS. AFTER 4 TO 5 MINUTES, THE HELICOPTER CRASHED INTO AN OPEN FIELD WITHOUT COMMUNICATING WITH THE TOWER WHILE STILL IN CLASS D AIRSPACE. THE CAUSE OF THE CRASH IS UNKNOWN.
NTSB investigation
The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.