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.
Airman assigned 10,000 feet MSL per ATC. Airman descended to 9,500 feet MSL without an ATC clearance. Airman's loss of altitude caused a loss of seperation with a 14 CFR part 121 air carrier.
As the FAA filed it
AIRMAN ASSIGNED 10,000 FEET MSL PER ATC. AIRMAN DESCENDED TO 9,500 FEET MSL WITHOUT AN ATC CLEARANCE. AIRMAN'S LOSS OF ALTITUDE CAUSED A LOSS OF SEPERATION WITH A 14 CFR PART 121 AIR CARRIER.