{"as_of":"2026-10-23","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Design","items":[{"count":0,"name":"Learjet","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/learjet"},{"count":21,"name":"Learjet 25D","note":"","unit":"registered","url":"https://eflight.com/models/learjet/25?variant=25D"},{"count":2,"name":"Learjet 25","note":"","unit":"registered","url":"https://eflight.com/models/learjet/25?variant=25"},{"count":null,"name":"Built of aluminium","note":"","unit":"","url":"https://eflight.com/materials/aluminium"}],"relation":"made by"},{"group":"Engines","items":[{"count":10,"name":"General Electric CJ610-8&9","note":"","unit":"of these aircraft","url":"https://eflight.com/engines/general-electric-cj610-8-9"},{"count":5,"name":"General Electric CJ-610-8A","note":"","unit":"of these aircraft","url":"https://eflight.com/engines/general-electric-cj-610-8a"},{"count":3,"name":"General Electric CJ610-series","note":"2700 hp","unit":"of these aircraft","url":"https://eflight.com/engines/general-electric-cj610-series"},{"count":1,"name":"Williams International FJ44-2C","note":"","unit":"of these aircraft","url":"https://eflight.com/engines/williams-international-fj44-2c"},{"count":1,"name":"General Electric CJ610-6","note":"","unit":"of these aircraft","url":"https://eflight.com/engines/general-electric-cj610-6"}],"relation":"powered by"},{"group":"Where they are","items":[{"count":3,"name":"Texas","note":"","unit":"of these aircraft","url":"https://eflight.com/states/TX"},{"count":3,"name":"New York","note":"","unit":"of these aircraft","url":"https://eflight.com/states/NY"},{"count":3,"name":"Florida","note":"","unit":"of these aircraft","url":"https://eflight.com/states/FL"},{"count":2,"name":"Oklahoma","note":"","unit":"of these aircraft","url":"https://eflight.com/states/OK"},{"count":2,"name":"Delaware","note":"","unit":"of these aircraft","url":"https://eflight.com/states/DE"}],"relation":"registered in"},{"group":"Biggest operators","items":[{"count":2,"name":"Calspan CORP","note":"","unit":"of these aircraft","url":"https://eflight.com/fleets/calspan-corp"},{"count":1,"name":"Wyoming Aviation Specialist INC","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Wyoming Aviation Specialist INC"},{"count":1,"name":"Tulsa Technology Center School District #18","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Tulsa Technology Center School District #18"},{"count":1,"name":"Teterboro School of Aeronautics DBA","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Teterboro School of Aeronautics DBA"},{"count":1,"name":"Spirit Wing Aviation LTD","note":"","unit":"of these aircraft","url":"https://eflight.com/search?q=Spirit Wing Aviation LTD"}],"relation":"owned by"},{"group":"Record","items":[{"count":22,"name":"NTSB accidents and incidents involving the 25","note":"8 fatal","unit":"cases since 1982","url":"https://eflight.com/models/learjet/25#accidents"}],"relation":"involved in"},{"group":"Airworthiness","items":[{"count":31,"name":"FAA orders naming the 25","note":"","unit":"airworthiness directives","url":"https://eflight.com/models/learjet/25#airworthiness"},{"count":243,"name":"Failure reports filed on the 25","note":"","unit":"reports since 1995","url":"https://eflight.com/models/learjet/25#airworthiness"},{"count":93,"name":"Approved modifications for the 25","note":"","unit":"supplemental type certificates","url":"https://eflight.com/models/learjet/25#airworthiness"}],"relation":"subject to"},{"group":"Analytics","items":[{"count":null,"name":"Accidents by model, with rates per thousand registered","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-model"},{"count":null,"name":"The fleet by kind, state and age","note":"","unit":"","url":"https://eflight.com/analytics/fleet"},{"count":null,"name":"Biggest makers and model families","note":"","unit":"","url":"https://eflight.com/analytics/makers"}],"relation":"compared in"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"built_of":{"material":"aluminium","name":"aluminium","note":null},"id":"learjet/25","name":"Learjet 25","registered":23,"type":"model","url":"https://eflight.com/models/learjet/25","versions":2},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}
