{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":53,"name":"Brantly B-2","note":"","unit":"registered","url":"https://eflight.com/models/brantly/b-2#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Rotorcraft systems","note":"","unit":"","url":"https://eflight.com/systems/rotorcraft"}],"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":"2006-05-02","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/0597288D2FB89C068625715300538D74.0001","id":"2006-08-07","kind":"AD","name":"Airworthiness directive 2006-08-07","published":"2006-04-17","subject":"Upper tail rotor vertical gearbox (gearbox)","system":"rotorcraft","type":"directive","url":"https://eflight.com/directives/2006-08-07"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}