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) With no previous time in this specific aircraft, airman conducted several taxi tests to become familiar with ground handling characteristics. During one test on an active runway, airman attempted a high speed test, resulting in a groundloop to the left. The operation of this aircraft was not for the purposes of flight.
As the FAA filed it
(-23) WITH NO PREVIOUS TIME IN THIS SPECIFIC AIRCRAFT, AIRMAN CONDUCTED SEVERAL TAXI TESTS TO BECOME FAMILIAR WITH GROUND HANDLING CHARACTERISTICS. DURING ONE TEST ON AN ACTIVE RUNWAY, AIRMAN ATTEMPTED A HIGH SPEED TEST, RESULTING IN A GROUNDLOOP TO THE LEFT. THE OPERATION OF THIS AIRCRAFT WAS NOT FOR THE PURPOSES OF FLIGHT.