From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) The pilot privacy data omitted was PIC of a pitts S1S, N818SH, on may 20, 2006, near Hartford, SD. While practicing aerobatic maneuvers, the entire propeller and flange departed the aircraft. The aircraft and its parts landed in a pasture - no other damage or injuries.
As the FAA filed it
(-23) THE PILOT ^PRIVACY DATA OM^ WAS PIC OF A PITTS S1S, N818SH, ON MAY 20, 2006, NEAR HARTFORD, SD. WHILE PRACTICING AEROBATIC MANEUVERS, THE ENTIRE PROPELLER AND FLANGE DEPARTED THE AIRCRAFT. THE AIRCRAFT AND ITS PARTS LANDED IN A PASTURE - NO OTHER DAMAGE OR INJURIES.