{"as_of":"2026-10-23","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":478,"name":"Bell 47","note":"","unit":"registered","url":"https://eflight.com/models/bell/47"},{"count":3082,"name":"Bell","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/bell"},{"count":null,"name":"Built of steel tube and aluminium","note":"as the model family is built; the register does not record it per aircraft","unit":"","url":"https://eflight.com/materials/steel-aluminium"}],"relation":"is a"},{"group":"Engine","items":[{"count":88,"name":"Lycoming TVO-435-GIA","note":"280 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/lycoming-tvo-435-gia"},{"count":null,"name":"Type certificate 2H3","note":"held by Scott'S-Bell 47 INC","unit":"","url":""}],"relation":"powered by"},{"group":"Place","items":[{"count":22,"name":"Bellaire, TX","note":"","unit":"aircraft registered in this town","url":""},{"count":29911,"name":"Texas","note":"","unit":"aircraft registered","url":"https://eflight.com/states/TX"}],"relation":"registered in"},{"group":"Record","items":[{"count":null,"name":"Accident on August 11, 1991 at Lake Ozark, MO: no injuries, substantial damage","note":"","unit":"","url":"https://eflight.com/accidents/CHI91LA257"}],"relation":"involved in"},{"group":"Airworthiness","items":[{"count":46,"name":"FAA orders naming the Bell 47","note":"","unit":"airworthiness directives","url":"https://eflight.com/models/bell/47#airworthiness"},{"count":145,"name":"Failure reports filed on the Bell 47","note":"","unit":"reports since 1995","url":"https://eflight.com/models/bell/47#airworthiness"},{"count":194,"name":"Approved modifications for the Bell 47","note":"","unit":"supplemental type certificates","url":"https://eflight.com/models/bell/47#airworthiness"},{"count":10,"name":"FAA orders naming the Lycoming TVO-435-GIA","note":"","unit":"airworthiness directives","url":"https://eflight.com/engines/lycoming-tvo-435-gia#airworthiness"},{"count":8,"name":"Failure reports on the Lycoming TVO-435-GIA","note":"","unit":"reports since 1995","url":"https://eflight.com/engines/lycoming-tvo-435-gia#airworthiness"},{"count":null,"name":"Report filed on this aircraft: Gear, fractured","note":"1998-08-20","unit":"","url":"https://eflight.com/systems/engine"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"Accident history of the Bell 47","note":"","unit":"","url":"https://eflight.com/models/bell/47#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 N61SD is now","note":"","unit":"","url":"https://eflight.com/live?q=N61SD"}],"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":"steel-aluminium","name":"steel tube and aluminium","note":"An open welded steel-tube frame with a plexiglass bubble."},"id":"N61SD","maker":"Bell","model":"47G-3B-1","name":"Bell 47G-3B-1 N61SD","state":"TX","type":"aircraft","url":"https://eflight.com/aircraft/N61SD","year_built":1966},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}