{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Covers","items":[{"count":4,"name":"Lycoming O-540-A1A","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a1a"},{"count":7,"name":"Lycoming O-540-A1A5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a1a5"},{"count":4,"name":"Lycoming O-540-A1B5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a1b5"},{"count":4,"name":"Lycoming O-540-A1C5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a1c5"},{"count":1,"name":"Lycoming O-540-A1D","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a1d"},{"count":18,"name":"Lycoming O-540-A1D5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a1d5"},{"count":2,"name":"Lycoming O-540-A2B","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a2b"},{"count":2,"name":"Lycoming O-540-A4B5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a4b5"},{"count":1,"name":"Lycoming O-540-A4C5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a4c5"},{"count":7,"name":"Lycoming O-540-A4D5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-a4d5"},{"count":1,"name":"Lycoming O-540-B1A5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-b1a5"},{"count":1,"name":"Lycoming O-540-B1B5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-b1b5"},{"count":27,"name":"Lycoming O-540-B2B5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-b2b5"},{"count":13,"name":"Lycoming O-540-B2C5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-b2c5"},{"count":40,"name":"Lycoming O-540-B4B5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-b4b5"},{"count":9,"name":"Lycoming O-540-E4A5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-e4a5"},{"count":21,"name":"Lycoming O-540-E4B5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-e4b5"},{"count":15,"name":"Lycoming O-540-E4C5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-e4c5"},{"count":299,"name":"Lycoming O-540-F1B5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-f1b5"},{"count":6,"name":"Lycoming O-540-G1A5","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-g1a5"},{"count":11,"name":"Lycoming O-540-J1A5D","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-j1a5d"},{"count":1,"name":"Lycoming O-540-J2A5D","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-j2a5d"},{"count":6,"name":"Lycoming O-540-J3A5D","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-j3a5d"},{"count":24,"name":"Lycoming O-540-J3C5D","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-j3c5d"},{"count":18,"name":"Lycoming O-540-L3C5D","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-l3c5d"},{"count":5244,"name":"Lycoming O-540 series","note":"","unit":"aircraft","url":"https://eflight.com/engines/lycoming-o-540-series"}],"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":37,"name":"FAA orders on these designs","note":"","unit":"airworthiness directives","url":"https://eflight.com/certificates/E-295"},{"count":null,"name":"2026-17-10: Reciprocating Engine Cylinder Section","note":"2026-09-14","unit":"","url":"https://eflight.com/directives/2026-17-10"},{"count":null,"name":"2026-04-11: Engine (Reciprocating)","note":"2026-04-08","unit":"","url":"https://eflight.com/directives/2026-04-11"},{"count":null,"name":"2024-21-02: Engine (Reciprocating)","note":"2024-12-05","unit":"","url":"https://eflight.com/directives/2024-21-02"},{"count":null,"name":"2022-16-03: Engine (RECIPROCATING)","note":"2022-08-15","unit":"","url":"https://eflight.com/directives/2022-16-03"}],"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/93856FC09B9F3B5686257B63006C422F.0001","holder":"Lycoming Engines","id":"E-295","models":["O-540-L3C5D","O-540-J2B5D","O-540-J1B5D","O-540-B2C5","O-540-B1D5","O-540-G2A5","O-540-H2A5","O-540-H1B5D","O-540-J3A5","O-540-J1D5D","O-540-B2B5","O-540-J1C5D","O-540-H1A5D","O-540-H2A5D","O-540-A1D","O-540-A4B5","O-540-J2D5D","O-540-F1B5","O-540-A3D5","O-540-A4C5","O-540-F1A5","O-540-A1D5","O-540-A1A5","O-540-A1A","O-540-H2B5D","O-540-E4C5","O-540-H1A5","O-540-D1A5","O-540-G1A5","O-540-B2A5","O-540-B4B5","O-540-A4E5","O-540-B4A5","O-540-J3A5D","O-540-E4A5","O-540-B1A5","O-540-J2A5D","O-540-B1B5","O-540-E4B5","O-540-A1C5","O-540-A4D5","O-540-J1A5D","O-540-A1B5","O-540-A2B","O-540-J2C5D","O-540-J3C5D","O-540-A4A5"],"name":"Type certificate E-295","product_type":"Engine","type":"certificate","url":"https://eflight.com/certificates/E-295"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}
