{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":74,"name":"Consolidated Vultee BT-13","note":"","unit":"registered","url":"https://eflight.com/models/consolidated-vultee/bt-13#airworthiness"},{"count":8,"name":"Consolidated Vultee BT-15","note":"","unit":"registered","url":"https://eflight.com/models/consolidated-vultee/bt-15#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Airframe structure","note":"","unit":"","url":"https://eflight.com/systems/structure"}],"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":"","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/95BCD0C25AD8986F86256A380059F227.0001","id":"52-02-01","kind":"AD","name":"Airworthiness directive 52-02-01","published":"","subject":"Bronze Rear Spar Fittings","system":"structure","type":"directive","url":"https://eflight.com/directives/52-02-01"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}