{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":1247,"name":"Piper PA-12 Super Cruiser","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-12#airworthiness"},{"count":100,"name":"Piper PA-14","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-14#airworthiness"},{"count":165,"name":"Piper PA-15","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-15#airworthiness"},{"count":276,"name":"Piper PA-16 Clipper","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-16#airworthiness"},{"count":96,"name":"Piper PA-17 Vagabond","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-17#airworthiness"},{"count":323,"name":"Piper PA-20 Pacer","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-20#airworthiness"},{"count":2940,"name":"Piper PA-22 Tri-Pacer and Colt","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-22#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Other and general","note":"","unit":"","url":"https://eflight.com/systems/other"}],"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":"1977-04-11","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/3CEE8EBCA9FEB8D786256E120049906B.0001","id":"74-17-04","kind":"AD","name":"Airworthiness directive 74-17-04","published":"1977-04-07","subject":"Fabric Reinforcement","system":"other","type":"directive","url":"https://eflight.com/directives/74-17-04"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}