{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Covers","items":[{"count":2428,"name":"Piper PA-24 Comanche","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-24"}],"relation":"covers"},{"group":"Held by","items":[{"count":null,"name":"Pitcairn Autogyro CO.","note":"","unit":"","url":"https://eflight.com/holders/pitcairn-autogyro-co"}],"relation":"held by"},{"group":"Orders","items":[{"count":51,"name":"FAA orders on these designs","note":"","unit":"airworthiness directives","url":"https://eflight.com/certificates/ATC 507"},{"count":null,"name":"2024-14-03: Autopilot System","note":"2024-08-20","unit":"","url":"https://eflight.com/directives/2024-14-03"},{"count":null,"name":"2022-03-15: Fuel Quantity Indicator","note":"2022-03-21","unit":"","url":"https://eflight.com/directives/2022-03-15"},{"count":null,"name":"2015-24-05: PLACARDS AND MARKINGS; Interior Placards","note":"2016-01-12","unit":"","url":"https://eflight.com/directives/2015-24-05"},{"count":null,"name":"2012-17-06: Flight Controls","note":"2012-10-22","unit":"","url":"https://eflight.com/directives/2012-17-06"}],"relation":"subject to"},{"group":"More","items":[{"count":null,"name":"Every type certificate","note":"","unit":"","url":"https://eflight.com/certificates"},{"count":null,"name":"Who holds what","note":"","unit":"","url":"https://eflight.com/holders"}],"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":{"faa_document":"https://drs.faa.gov/browse/excelExternalWindow/C178014D7714758F8525673D004F93EB.0001","holder":"Pitcairn Autogyro Co.","id":"ATC 507","models":["PA-24"],"name":"Type certificate ATC 507","product_type":"Aircraft","type":"certificate","url":"https://eflight.com/certificates/ATC 507"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}