{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Covers","items":[{"count":48,"name":"Lycoming IGSO-540-B1A","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-igso-540-b1a"}],"relation":"covers"},{"group":"Held by","items":[{"count":null,"name":"Lycoming Engines","note":"","unit":"","url":"https://eflight.com/holders/lycoming-engines"}],"relation":"held by"},{"group":"Orders","items":[{"count":14,"name":"FAA orders on these designs","note":"","unit":"airworthiness directives","url":"https://eflight.com/certificates/1E7"},{"count":null,"name":"2022-16-03: Engine (RECIPROCATING)","note":"2022-08-15","unit":"","url":"https://eflight.com/directives/2022-16-03"},{"count":null,"name":"2012-03-06: Fuel servo diaphragm","note":"2012-02-24","unit":"","url":"https://eflight.com/directives/2012-03-06"},{"count":null,"name":"2004-10-14: Crankshaft gear","note":"2004-06-25","unit":"","url":"https://eflight.com/directives/2004-10-14"},{"count":null,"name":"97-15-11: Cylinder kits","note":"1997-08-12","unit":"","url":"https://eflight.com/directives/97-15-11"}],"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/EEB620E7CE8BD9C1862577CF004E243C.0001","holder":"Lycoming Engines","id":"1E7","models":["IGSO-540-A1F","IGSO-540-B1A","IGSO-540-A1H","IGSO-540-A1C","IGSO-540-A1A","IGSO-540-B1C","IGSO-540-A1D","IGSO-540-A1E"],"name":"Type certificate 1E7","product_type":"Engine","type":"certificate","url":"https://eflight.com/certificates/1E7"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}