{"as_of":"2026-10-26","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":119,"name":"Grumman G-164","note":"","unit":"registered","url":"https://eflight.com/models/grumman/g-164"},{"count":442,"name":"Grumman","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/grumman"},{"count":null,"name":"Built of steel tube and fabric","note":"as the model family is built; the register does not record it per aircraft","unit":"","url":"https://eflight.com/materials/steel-fabric"}],"relation":"is a"},{"group":"Engine","items":[{"count":210,"name":"Jacobs R755B series","note":"275 hp","unit":"aircraft with this engine series","url":"https://eflight.com/engines/jacobs-r755b-series"}],"relation":"powered by"},{"group":"Owner","items":[{"count":10,"name":"Regenald Michaud Aviation LLC","note":"","unit":"aircraft in the fleet","url":"https://eflight.com/fleets/regenald-michaud-aviation-llc"}],"relation":"owned by"},{"group":"Place","items":[{"count":29,"name":"Willows, CA","note":"","unit":"aircraft registered in this town","url":""},{"count":null,"name":"Willows/Glenn County","note":"WLW","unit":"","url":"https://eflight.com/airports/WLW"},{"count":27642,"name":"California","note":"","unit":"aircraft registered","url":"https://eflight.com/states/CA"}],"relation":"registered in"},{"group":"Record","items":[{"count":null,"name":"No NTSB accident or incident record under this tail number","note":"","unit":"","url":"https://eflight.com/aircraft/N503Y#records-check"}],"relation":"involved in"},{"group":"Airworthiness","items":[{"count":1,"name":"Approved modifications for the Grumman G-164","note":"","unit":"supplemental type certificates","url":"https://eflight.com/models/grumman/g-164#airworthiness"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"Accident history of the Grumman G-164","note":"","unit":"","url":"https://eflight.com/models/grumman/g-164#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 N503Y is now","note":"","unit":"","url":"https://eflight.com/live?q=N503Y"}],"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-fabric","name":"steel tube and fabric","note":"The Ag Cat biplane: steel tube, aluminium wings, fabric."},"id":"N503Y","maker":"Grumman","model":"G-164","name":"Grumman G-164 N503Y","state":"CA","type":"aircraft","url":"https://eflight.com/aircraft/N503Y","year_built":1965},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}