{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":11,"name":"Continental C145-2","note":"","unit":"aircraft","url":"https://eflight.com/engines/continental-c145-2#airworthiness"},{"count":1,"name":"Continental C145-2H","note":"","unit":"aircraft","url":"https://eflight.com/engines/continental-c145-2h#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Engine","note":"","unit":"","url":"https://eflight.com/systems/engine"}],"relation":"about"},{"group":"More","items":[{"count":null,"name":"Every FAA order","note":"","unit":"","url":"https://eflight.com/directives"},{"count":null,"name":"Every aircraft system","note":"","unit":"","url":"https://eflight.com/systems"}],"relation":"see also"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"effective":"","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/0EBF9569C17CEF118625682C0068FE10.0001","id":"50-20-01","kind":"AD","name":"Airworthiness directive 50-20-01","published":"","subject":"Crankcase","system":"engine","type":"directive","url":"https://eflight.com/directives/50-20-01"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}