{"as_of":"2026-11-09","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Aircraft","items":[{"count":null,"name":"N121UA on the register today","note":"the tail number may have moved to another aircraft since","unit":"","url":"https://eflight.com/aircraft/N121UA"},{"count":192,"name":"Boeing 747","note":"the model family and its accident history","unit":"registered today","url":"https://eflight.com/models/boeing/747"},{"count":6677,"name":"Boeing","note":"","unit":"aircraft on the register","url":"https://eflight.com/makers/boeing"},{"count":null,"name":"Engine:","note":"as the NTSB recorded it","unit":"","url":""},{"count":null,"name":"Engine:","note":"as the NTSB recorded it","unit":"","url":""}],"relation":"involved"},{"group":"Analytics","items":[{"count":null,"name":"Accidents over time since 1982","note":"","unit":"","url":"https://eflight.com/analytics/accidents-over-time"},{"count":null,"name":"Accidents by phase of flight, weather and hour","note":"","unit":"","url":"https://eflight.com/analytics/accidents-by-phase"},{"count":null,"name":"The accident map","note":"","unit":"","url":"https://eflight.com/analytics/accident-map"}],"relation":"counted in"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"city":"Frankfurt","date":"2017-07-18","fatalities":0,"id":"DCA17WA159","name":"Boeing 747 422 incident near Frankfurt, De, July 18, 2017","state":"","type":"INC","url":"https://eflight.com/accidents/DCA17WA159"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}