{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":26,"name":"Schleicher Alexander Gmbh & Co ASH 26","note":"","unit":"registered","url":"https://eflight.com/models/schleicher-alexander-gmbh-co/ash-26#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Other and general","note":"","unit":"","url":"https://eflight.com/systems/other"}],"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":"1999-09-13","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/05B28AD1D3686DC886256A4D005EC180.0001","id":"99-15-13","kind":"AD","name":"Airworthiness directive 99-15-13","published":"1999-07-26","subject":"Internal Cooling Air Fan Inspection","system":"other","type":"directive","url":"https://eflight.com/directives/99-15-13"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}