{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":18619,"name":"Piper PA-28 Cherokee, Warrior, Archer and Arrow","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-28#airworthiness"},{"count":3917,"name":"Piper PA-32 Cherokee Six, Lance and Saratoga","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-32#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":"2021-02-16","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/E7C6578B69CDCE7D8625865E005B20FE.0001","id":"2020-26-16","kind":"AD","name":"Airworthiness directive 2020-26-16","published":"2021-01-15","subject":"Wing Spar","system":"structure","type":"directive","url":"https://eflight.com/directives/2020-26-16"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}