{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":6,"name":"Helio Aircraft Ltd H800","note":"","unit":"registered","url":"https://eflight.com/models/helio-aircraft-ltd/h800#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":"1987-03-09","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/FDD554242743E33B86256A4E0050D1FE.0001","id":"87-04-09","kind":"AD","name":"Airworthiness directive 87-04-09","published":"","subject":"Landing Gear Legs","system":"landing-gear","type":"directive","url":"https://eflight.com/directives/87-04-09"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}