{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":2,"name":"American Champion Aircraft 8 Decathlon and Scout","note":"","unit":"with this engine series","url":"https://eflight.com/models/american-champion-aircraft/8"},{"count":2,"name":"Cessna 177 Cardinal","note":"","unit":"with this engine series","url":"https://eflight.com/models/cessna/177"},{"count":2,"name":"Rockwell International 112","note":"","unit":"with this engine series","url":"https://eflight.com/models/rockwell-international/112"},{"count":1,"name":"Lake LA-4","note":"","unit":"with this engine series","url":"https://eflight.com/models/lake/la-4"},{"count":1,"name":"Mooney M-20","note":"","unit":"with this engine series","url":"https://eflight.com/models/mooney/m-20"}],"relation":"powers"},{"group":"Where they are","items":[{"count":4,"name":"Florida","note":"","unit":"of these aircraft","url":"https://eflight.com/states/FL"},{"count":2,"name":"Washington","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WA"},{"count":2,"name":"Tennessee","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TN"},{"count":2,"name":"New York","note":"","unit":"of these aircraft","url":"https://eflight.com/states/NY"},{"count":2,"name":"Delaware","note":"","unit":"of these aircraft","url":"https://eflight.com/states/DE"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":1,"name":"Hawk Aviation LLC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/hawk-aviation-llc"}],"relation":"owned by"},{"group":"Airworthiness","items":[{"count":5,"name":"FAA orders naming the Lycoming IO-390-A1A6","note":"","unit":"airworthiness directives","url":"https://eflight.com/engines/lycoming-io-390-a1a6#airworthiness"},{"count":4,"name":"Failure reports on the Lycoming IO-390-A1A6","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/lycoming-io-390-a1a6#airworthiness"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"The fleet by engine type","note":"","unit":"","url":"https://eflight.com/analytics/fleet"},{"count":null,"name":"Every engine series","note":"","unit":"","url":"https://eflight.com/engines"}],"relation":"compared in"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"aircraft":20,"horsepower":210,"id":"lycoming-io-390-a1a6","maker":"Lycoming","name":"Lycoming IO-390-A1A6","thrust_lb":null,"type":"Piston (reciprocating)","url":"https://eflight.com/engines/lycoming-io-390-a1a6"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}