{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Covers","items":[{"count":5,"name":"Martin 404","note":"","unit":"registered","url":"https://eflight.com/models/martin/404"}],"relation":"covers"},{"group":"Held by","items":[{"count":null,"name":"Martin-Marietta Corporation","note":"","unit":"","url":"https://eflight.com/holders/martin-marietta-corporation"}],"relation":"held by"},{"group":"Orders","items":[{"count":21,"name":"FAA orders on these designs","note":"","unit":"airworthiness directives","url":"https://eflight.com/certificates/1A7"},{"count":null,"name":"77-17-12: Wing Spar Chord Splice Joints","note":"1977-08-30","unit":"","url":"https://eflight.com/directives/77-17-12"},{"count":null,"name":"71-09-06: Cracks In Main Gear Gland Nut","note":"1971-05-04","unit":"","url":"https://eflight.com/directives/71-09-06"},{"count":null,"name":"67-19-04: Engine Mount","note":"1967-06-20","unit":"","url":"https://eflight.com/directives/67-19-04"},{"count":null,"name":"67-14-06: Wing Inspection","note":"1967-04-28","unit":"","url":"https://eflight.com/directives/67-14-06"}],"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/C68225748F67FC4A8525672900458E89.0001","holder":"Martin-Marietta Corporation","id":"1A7","models":["404"],"name":"Type certificate 1A7","product_type":"Aircraft","type":"certificate","url":"https://eflight.com/certificates/1A7"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}