FAA incident report · Cessna 172 · Minneapolis, MN · April 15, 1990
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.
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Vibration and engine knock after takeoff. Returned. Found a cylinder barrel was cracked.
VIBRATION AND ENGINE KNOCK AFTER TAKEOFF. RETURNED. FOUND A CYLINDER BARREL WAS CRACKED.