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.
Unable to maintain altitude due to power loss. Forced landing on tundra. NR4 cylinder had separated.
As the FAA filed it
UNABLE TO MAINTAIN ALTITUDE DUE TO POWER LOSS. FORCED LANDING ON TUNDRA. NR4 CYLINDER HAD SEPARATED.
Other reports on N521BK · 2
Matched to the same aircraft by N-number and date.