{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":2085,"name":"Cessna 170","note":"","unit":"registered","url":"https://eflight.com/models/cessna/170#airworthiness"},{"count":323,"name":"Piper PA-20 Pacer","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-20#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Landing gear","note":"","unit":"","url":"https://eflight.com/systems/landing-gear"}],"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":"","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/333F61C3D91A63A886256A3200699E11.0001","id":"54-02-02","kind":"AD","name":"Airworthiness directive 54-02-02","published":"1956-12-04","subject":"Wheel Skis","system":"landing-gear","type":"directive","url":"https://eflight.com/directives/54-02-02"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}