{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":20670,"name":"Cessna 172 Skyhawk","note":"","unit":"registered","url":"https://eflight.com/models/cessna/172#airworthiness"},{"count":11828,"name":"Cessna 182 Skylane","note":"","unit":"registered","url":"https://eflight.com/models/cessna/182#airworthiness"},{"count":213,"name":"Cessna 206 Stationair","note":"","unit":"registered","url":"https://eflight.com/models/cessna/206#airworthiness"},{"count":1058,"name":"Cessna T206 Turbo Stationair","note":"","unit":"registered","url":"https://eflight.com/models/cessna/t206#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 2013-11-11","note":"","unit":"","url":"https://eflight.com/directives/2013-11-11"}],"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":"2000-03-11","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/0F74FAE936E7360286256A49005BF1D8.0001","id":"2000-04-01","kind":"AD","name":"Airworthiness directive 2000-04-01","published":"2000-02-22","subject":"Oil Pressure Switch","system":"engine","type":"directive","url":"https://eflight.com/directives/2000-04-01"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}