{"as_of":"2026-11-06","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":1447,"name":"Pilatus PC-12","note":"","unit":"registered","url":"https://eflight.com/models/pilatus/pc-12#airworthiness"}],"relation":"applies to"},{"group":"System","items":[{"count":null,"name":"Fuel system","note":"","unit":"","url":"https://eflight.com/systems/fuel"}],"relation":"about"},{"group":"Related orders","items":[{"count":null,"name":"Replaces 98-11-01","note":"","unit":"","url":"https://eflight.com/directives/98-11-01"},{"count":null,"name":"Replaced by 98-11-01 R2","note":"","unit":"","url":"https://eflight.com/directives/98-11-01 R2"}],"relation":"related to"},{"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":"1998-05-18","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/C115FF7C02FCEFCB86256A64006ED7FD.0001","id":"98-11-01 R1","kind":"AD","name":"Airworthiness directive 98-11-01 R1","published":"1998-06-25","subject":"Fuel Tank Vent Valves","system":"fuel","type":"directive","url":"https://eflight.com/directives/98-11-01 R1"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}