{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":26,"name":"Pratt & Whitney Canada PW206B","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pw206b#airworthiness"},{"count":146,"name":"Pratt & Whitney Canada PW206B2","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pw206b2#airworthiness"},{"count":43,"name":"Pratt & Whitney Canada PW206C","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pw206c#airworthiness"},{"count":49,"name":"Pratt & Whitney Canada PW207C","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pw207c#airworthiness"},{"count":35,"name":"Pratt & Whitney Canada PW207D","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pw207d#airworthiness"},{"count":125,"name":"Pratt & Whitney Canada PW207D1/D2","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pw207d1-d2#airworthiness"},{"count":9,"name":"Pratt & Whitney Canada PW207E","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pw207e#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":"2013-03-26","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/B386388CD793996F86257B17004E5124.0001","id":"2013-03-21","kind":"AD","name":"Airworthiness directive 2013-03-21","published":"2013-02-19","subject":"Power turbine (PT) disks","system":"engine","type":"directive","url":"https://eflight.com/directives/2013-03-21"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}