{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":1316,"name":"Piper PA-23 Apache and Aztec","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-23#airworthiness"},{"count":879,"name":"Piper PA-30 Twin Comanche","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-30#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Engine","note":"","unit":"","url":"https://eflight.com/systems/engine"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaced by 2017-15-05","note":"","unit":"","url":"https://eflight.com/directives/2017-15-05"}],"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":"1973-12-14","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/18AF637ADA94FA6386256E01005472EC.0001","id":"69-13-03","kind":"AD","name":"Airworthiness directive 69-13-03","published":"","subject":"Heater Exhaust Tube","system":"engine","type":"directive","url":"https://eflight.com/directives/69-13-03"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}