{"as_of":"2026-11-10","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":4,"name":"Piper J-3 Cub","note":"","unit":"with this engine series","url":"https://eflight.com/models/piper/j-3"}],"relation":"powers"},{"group":"Where they are","items":[{"count":3,"name":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"},{"count":2,"name":"California","note":"","unit":"of these aircraft","url":"https://eflight.com/states/CA"},{"count":1,"name":"Wisconsin","note":"","unit":"of these aircraft","url":"https://eflight.com/states/WI"},{"count":1,"name":"Pennsylvania","note":"","unit":"of these aircraft","url":"https://eflight.com/states/PA"},{"count":1,"name":"Ohio","note":"","unit":"of these aircraft","url":"https://eflight.com/states/OH"}],"relation":"registered in"},{"group":"Airworthiness","items":[{"count":1,"name":"Failure reports on the Franklin 4AC150-A","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/franklin-4ac150-a#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":12,"horsepower":60,"id":"franklin-4ac150-a","maker":"Franklin","name":"Franklin 4AC150-A","thrust_lb":null,"type":"Piston (reciprocating)","url":"https://eflight.com/engines/franklin-4ac150-a"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}