{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":159,"name":"Pratt & Whitney Canada JT15D-1","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-jt15d-1#airworthiness"},{"count":73,"name":"Pratt & Whitney Canada JT15D-1A","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-jt15d-1a#airworthiness"},{"count":1,"name":"Pratt & Whitney Canada JT15D-1B","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-jt15d-1b#airworthiness"},{"count":357,"name":"Pratt & Whitney Canada JT15D-4","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-jt15d-4#airworthiness"},{"count":10,"name":"Pratt & Whitney Canada JT15D-4B","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-jt15d-4b#airworthiness"},{"count":9,"name":"Pratt & Whitney Canada JT15D-4C","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-jt15d-4c#airworthiness"},{"count":451,"name":"Pratt & Whitney Canada JT15D 5 series","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-jt15d-5-series#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":"1993-11-24","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/6FDE54BD85C1E98E86256847005EDDC1.0001","id":"93-18-08","kind":"AD","name":"Airworthiness directive 93-18-08","published":"","subject":"High Pressure Turbine (HPT) Assembly","system":"engine","type":"directive","url":"https://eflight.com/directives/93-18-08"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}