{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Covers","items":[{"count":1,"name":"Lycoming O-350","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-350"},{"count":17,"name":"Lycoming O-350 series","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-350-series"}],"relation":"covers"},{"group":"Held by","items":[{"count":null,"name":"Textron Lycoming Avco Corporation","note":"","unit":"","url":"https://eflight.com/holders/textron-lycoming-avco-corporation"}],"relation":"held by"},{"group":"Orders","items":[{"count":4,"name":"FAA orders on these designs","note":"","unit":"airworthiness directives","url":"https://eflight.com/certificates/TC 227"},{"count":null,"name":"2012-03-07: Carburetor","note":"2012-03-27","unit":"","url":"https://eflight.com/directives/2012-03-07"},{"count":null,"name":"2004-10-14: Crankshaft gear","note":"2004-06-25","unit":"","url":"https://eflight.com/directives/2004-10-14"},{"count":null,"name":"90-04-06 R1: Propeller Governor External Oil Line","note":"1991-05-28","unit":"","url":"https://eflight.com/directives/90-04-06 R1"},{"count":null,"name":"66-06-03: Connecting Rod Assemblies","note":"1969-01-16","unit":"","url":"https://eflight.com/directives/66-06-03"}],"relation":"subject to"},{"group":"More","items":[{"count":null,"name":"Every type certificate","note":"","unit":"","url":"https://eflight.com/certificates"},{"count":null,"name":"Who holds what","note":"","unit":"","url":"https://eflight.com/holders"}],"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":{"faa_document":"https://drs.faa.gov/browse/excelExternalWindow/4D248C7E4E9D9DC48525670E004EDCC3.0001","holder":"Textron Lycoming AVCO Corporation","id":"TC 227","models":["O-350-A","O-350"],"name":"Type certificate TC 227","product_type":"Engine","type":"certificate","url":"https://eflight.com/certificates/TC 227"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}