{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Covers","items":[{"count":51,"name":"Aero Commander 680","note":"","unit":"registered","url":"https://eflight.com/models/aero-commander/680"}],"relation":"covers"},{"group":"Held by","items":[{"count":null,"name":"Twin Commander Aircraft LLC","note":"","unit":"","url":"https://eflight.com/holders/twin-commander-aircraft-llc"}],"relation":"held by"},{"group":"Orders","items":[{"count":19,"name":"FAA orders on these designs","note":"","unit":"airworthiness directives","url":"https://eflight.com/certificates/2A4"},{"count":null,"name":"2005-18-20: \"FASTprop\" propeller de-icers","note":"2005-10-14","unit":"","url":"https://eflight.com/directives/2005-18-20"},{"count":null,"name":"2005-01-19: Mode S transponders","note":"2005-02-23","unit":"","url":"https://eflight.com/directives/2005-01-19"},{"count":null,"name":"2000-02-30: Airframe Pneumatic Deicing Boots","note":"2000-03-24","unit":"","url":"https://eflight.com/directives/2000-02-30"},{"count":null,"name":"98-20-34: Airplane Flight Manuals--Severe Icing Conditions","note":"1998-11-03","unit":"","url":"https://eflight.com/directives/98-20-34"}],"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/DRSDOCID154679920420241120192109.0001","holder":"Twin Commander Aircraft LLC","id":"2A4","models":["680-V","680-F(P)","680-F","680-E","695B","690C","560-F","720","690A","680-W","690D","690B","680-FL(P)","695","680-FL","680","681","685","695A","690","680-T"],"name":"Type certificate 2A4","product_type":"Aircraft","type":"certificate","url":"https://eflight.com/certificates/2A4"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}