{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Models most reported","items":[{"count":1891,"name":"Boeing 737","note":"","unit":"failure reports in ten years","url":"https://eflight.com/models/boeing/737#airworthiness"},{"count":1091,"name":"Boeing 767","note":"","unit":"failure reports in ten years","url":"https://eflight.com/models/boeing/767#airworthiness"},{"count":420,"name":"Airbus A319","note":"","unit":"failure reports in ten years","url":"https://eflight.com/models/airbus/a319#airworthiness"},{"count":409,"name":"Airbus A320","note":"","unit":"failure reports in ten years","url":"https://eflight.com/models/airbus/a320#airworthiness"},{"count":397,"name":"Airbus A321","note":"","unit":"failure reports in ten years","url":"https://eflight.com/models/airbus/a321#airworthiness"},{"count":214,"name":"Airbus A330","note":"","unit":"failure reports in ten years","url":"https://eflight.com/models/airbus/a330#airworthiness"},{"count":184,"name":"Boeing 757","note":"","unit":"failure reports in ten years","url":"https://eflight.com/models/boeing/757#airworthiness"},{"count":156,"name":"Bombardier CL-600 Challenger and CRJ","note":"","unit":"failure reports in ten years","url":"https://eflight.com/models/bombardier/cl-600#airworthiness"}],"relation":"reported on"},{"group":"Engine series most reported","items":[{"count":18,"name":"Allison (Rolls-Royce) 250-C47B","note":"","unit":"failure reports in ten years","url":"https://eflight.com/engines/allison-rolls-royce-250-c47b#airworthiness"},{"count":16,"name":"Pratt & Whitney Canada PT6A-140","note":"","unit":"failure reports in ten years","url":"https://eflight.com/engines/pratt-whitney-canada-pt6a-140#airworthiness"},{"count":14,"name":"Pratt & Whitney PT6A series","note":"","unit":"failure reports in ten years","url":"https://eflight.com/engines/pratt-whitney-pt6a-series#airworthiness"},{"count":14,"name":"Turbomeca (Safran) ARRIEL 1E2","note":"","unit":"failure reports in ten years","url":"https://eflight.com/engines/turbomeca-safran-arriel-1e2#airworthiness"},{"count":12,"name":"Rolls-Royce RB-211 series","note":"","unit":"failure reports in ten years","url":"https://eflight.com/engines/rolls-royce-rb-211-series#airworthiness"},{"count":10,"name":"Lycoming IO-360-L2A","note":"","unit":"failure reports in ten years","url":"https://eflight.com/engines/lycoming-io-360-l2a#airworthiness"}],"relation":"reported on"},{"group":"Orders","items":[{"count":0,"name":"FAA orders on fuel system","note":"","unit":"airworthiness directives","url":"https://eflight.com/directives?system=fuel"}],"relation":"governed by"},{"group":"More","items":[{"count":null,"name":"Every aircraft system","note":"","unit":"","url":"https://eflight.com/systems"},{"count":null,"name":"Every FAA order","note":"","unit":"","url":"https://eflight.com/directives"}],"relation":"see also"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"faa_orders":0,"failure_reports_10_years":5820,"id":"fuel","name":"Fuel system","type":"system","url":"https://eflight.com/systems/fuel"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}