{"as_of":"2026-10-12","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Fitted to","items":[{"count":4,"name":"British Aerospace BAE 146","note":"","unit":"with this engine series","url":"https://eflight.com/models/british-aerospace/bae-146"}],"relation":"powers"},{"group":"Where they are","items":[{"count":4,"name":"Montana","note":"","unit":"of these aircraft","url":"https://eflight.com/states/MT"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":3,"name":"Neptune Aviation Services INC","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/neptune-aviation-services-inc"}],"relation":"owned by"},{"group":"Airworthiness","items":[{"count":784,"name":"Failure reports on the Lycoming ALF502R-5","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/lycoming-alf502r-5#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":4,"horsepower":null,"id":"lycoming-alf502r-5","maker":"Lycoming","name":"Lycoming ALF502R-5","thrust_lb":6970,"type":"Turbofan","url":"https://eflight.com/engines/lycoming-alf502r-5"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}