{"as_of":"2026-10-26","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":934,"name":"Piper PA-31 Navajo and Chieftain","note":"","unit":"registered","url":"https://eflight.com/models/piper/pa-31"},{"count":44844,"name":"Piper","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/piper"},{"count":null,"name":"Built of aluminium","note":"as the model family is built; the register does not record it per aircraft","unit":"","url":"https://eflight.com/materials/aluminium"}],"relation":"is a"},{"group":"Engine","items":[{"count":5077,"name":"Lycoming TIO-540 series","note":"310 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/lycoming-tio-540-series"}],"relation":"powered by"},{"group":"Owner","items":[{"count":351,"name":"Aircraft Guaranty CORP Trustee","note":"","unit":"aircraft in the fleet","url":"https://eflight.com/fleets/aircraft-guaranty-corp-trustee"}],"relation":"owned by"},{"group":"Place","items":[{"count":1091,"name":"Oklahoma City, OK","note":"","unit":"aircraft registered in this town","url":""},{"count":null,"name":"Okc Will Rogers International","note":"OKC","unit":"","url":"https://eflight.com/airports/OKC"},{"count":null,"name":"Wiley Post Airport","note":"PWA","unit":"","url":"https://eflight.com/airports/PWA"},{"count":null,"name":"Clarence E Page Municipal","note":"RCE","unit":"","url":"https://eflight.com/airports/RCE"},{"count":null,"name":"Sundance Airport","note":"HSD","unit":"","url":"https://eflight.com/airports/HSD"},{"count":5646,"name":"Oklahoma","note":"","unit":"aircraft registered","url":"https://eflight.com/states/OK"}],"relation":"registered in"},{"group":"Record","items":[{"count":null,"name":"Accident on June 11, 1997 at Berry Island: no injuries, substantial damage","note":"","unit":"","url":"https://eflight.com/accidents/MIA97WA186"}],"relation":"involved in"},{"group":"Airworthiness","items":[{"count":114,"name":"FAA orders naming the Piper PA-31 Navajo and Chieftain","note":"","unit":"airworthiness directives","url":"https://eflight.com/models/piper/pa-31#airworthiness"},{"count":3365,"name":"Failure reports filed on the Piper PA-31 Navajo and Chieftain","note":"","unit":"reports since 1995","url":"https://eflight.com/models/piper/pa-31#airworthiness"},{"count":535,"name":"Approved modifications for the Piper PA-31 Navajo and Chieftain","note":"","unit":"supplemental type certificates","url":"https://eflight.com/models/piper/pa-31#airworthiness"},{"count":41,"name":"FAA orders naming the Lycoming TIO-540 series","note":"","unit":"airworthiness directives","url":"https://eflight.com/engines/lycoming-tio-540-series#airworthiness"},{"count":363,"name":"Failure reports on the Lycoming TIO-540 series","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/lycoming-tio-540-series#airworthiness"},{"count":null,"name":"Report filed on this aircraft: Gas Generator, corrosion hole","note":"1997-02-28","unit":"","url":"https://eflight.com/systems/engine"},{"count":null,"name":"Report filed on this aircraft: Gas Generator, corrosion hole","note":"1997-02-28","unit":"","url":"https://eflight.com/systems/engine"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"Accident history of the Piper PA-31 Navajo and Chieftain","note":"","unit":"","url":"https://eflight.com/models/piper/pa-31#accidents"},{"count":null,"name":"Accidents by model, with rates per thousand registered","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-model"}],"relation":"compared in"},{"group":"Live","items":[{"count":null,"name":"Where N1AT is now","note":"","unit":"","url":"https://eflight.com/live?q=N1AT"}],"relation":"seen at"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"built_of":{"inherited_from_model":true,"material":"aluminium","name":"aluminium","note":null},"id":"N1AT","maker":"Piper","model":"PA-31-350","name":"Piper PA-31-350 N1AT","state":"OK","type":"aircraft","url":"https://eflight.com/aircraft/N1AT","year_built":1974},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}
