{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Applies to","items":[{"count":1316,"name":"Piper PA-23 Apache and Aztec","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-23#airworthiness"},{"count":879,"name":"Piper PA-30 Twin Comanche","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-30#airworthiness"},{"count":935,"name":"Piper PA-31 Navajo and Chieftain","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-31#airworthiness"},{"count":998,"name":"Piper PA-34 Seneca","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-34#airworthiness"},{"count":82,"name":"Piper PA-39 Twin Comanche C/R","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-39#airworthiness"},{"count":59,"name":"Piper PA-42","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-42#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":"1999-08-17","faa_document":"https://drs.faa.gov/browse/excelExternalWindow/79A02B600EFA9C6F862569AC005E07BE.0001","id":"99-14-01","kind":"AD","name":"Airworthiness directive 99-14-01","published":"1999-06-28","subject":"AFM - Limitations Section - Icing","system":"other","type":"directive","url":"https://eflight.com/directives/99-14-01"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}