{"as_of":"2026-10-30","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":35,"name":"Cessna 336","note":"","unit":"registered","url":"https://eflight.com/models/cessna/336#airworthiness"},{"count":370,"name":"Cessna 337 Skymaster","note":"","unit":"registered","url":"https://eflight.com/models/cessna/337#airworthiness"},{"count":34,"name":"Cessna M337","note":"","unit":"registered","url":"https://eflight.com/models/cessna/m337#airworthiness"},{"count":33,"name":"Cessna P337","note":"","unit":"registered","url":"https://eflight.com/models/cessna/p337#airworthiness"},{"count":193,"name":"Cessna T337","note":"","unit":"registered","url":"https://eflight.com/models/cessna/t337#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Airframe structure","note":"","unit":"","url":"https://eflight.com/systems/structure"}],"relation":"about"},{"group":"More","items":[{"count":null,"name":"Every FAA order","note":"","unit":"","url":"https://eflight.com/directives"},{"count":null,"name":"Every aircraft system","note":"","unit":"","url":"https://eflight.com/systems"}],"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":{"effective":"1978-05-11","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/665E8515681004E086256A3400690BDF.0001","id":"78-09-05","kind":"AD","name":"Airworthiness directive 78-09-05","published":"","subject":"Wing Spar Caps and Web Doublers","system":"structure","type":"directive","url":"https://eflight.com/directives/78-09-05"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}