{"as_of":"2026-10-30","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":58,"name":"Bombardier DHC-8 Dash 8 and Q400","note":"","unit":"registered","url":"https://eflight.com/models/bombardier/dhc-8#airworthiness"},{"count":28,"name":"Dehavilland DHC-8","note":"","unit":"registered","url":"https://eflight.com/models/dehavilland/dhc-8#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Engine","note":"","unit":"","url":"https://eflight.com/systems/engine"}],"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":"1988-12-12","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/31FC33569F7CD5A0862569ED00562939.0001","id":"88-12-51 R1","kind":"AD","name":"Airworthiness directive 88-12-51 R1","published":"","subject":"AFM Changes -- Engine Shutdown","system":"engine","type":"directive","url":"https://eflight.com/directives/88-12-51 R1"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}