{"as_of":"2026-10-22","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Held by","items":[{"count":null,"name":"Napier D. and Son LTD.","note":"","unit":"","url":"https://eflight.com/holders/napier-d-and-son-ltd"}],"relation":"held by"},{"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/E50E9A0686B571158525670D00470823.0001","holder":"Napier D. and Son Ltd.","id":"E-305","models":["Eland 507","Eland 504A","Eland 503A","Eland 503","Eland 508A","Eland 504","Eland 508","Eland 507A"],"name":"Type certificate E-305","product_type":"Engine","type":"certificate","url":"https://eflight.com/certificates/E-305"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}