{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Held by","items":[{"count":null,"name":"American Aeronautical Corporation","note":"","unit":"","url":"https://eflight.com/holders/american-aeronautical-corporation"}],"relation":"held by"},{"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/352E3B0678C4B90D8525672B0073FA01.0001","holder":"American Aeronautical Corporation","id":"ATC 336","models":["Savoia Marchetti S-56-31","Savoia Marchetti S-56-B"],"name":"Type certificate ATC 336","product_type":"Aircraft","type":"certificate","url":"https://eflight.com/certificates/ATC 336"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}