{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":115,"name":"Dehavilland DHC-6","note":"","unit":"registered","url":"https://eflight.com/models/dehavilland/dhc-6#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Other and general","note":"","unit":"","url":"https://eflight.com/systems/other"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaced by 2022-03-04","note":"","unit":"","url":"https://eflight.com/directives/2022-03-04"}],"relation":"related to"},{"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":"1981-06-19","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/77D8048D85F7C84F86256A4E00580362.0001","id":"80-13-12 R1","kind":"AD","name":"Airworthiness directive 80-13-12 R1","published":"1981-06-15","subject":"Longerons","system":"other","type":"directive","url":"https://eflight.com/directives/80-13-12 R1"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}