{"as_of":"2026-10-05","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Covers","items":[{"count":3,"name":"Pratt & Whitney Canada PT6B-36A","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pt6b-36a"},{"count":4,"name":"Pratt & Whitney Canada PT6B-36B","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pt6b-36b"},{"count":186,"name":"Pratt & Whitney Canada PT6B-37A","note":"","unit":"aircraft","url":"https://eflight.com/engines/pratt-whitney-canada-pt6b-37a"}],"relation":"covers"},{"group":"Held by","items":[{"count":null,"name":"Pratt & Whitney Canada CORP.","note":"","unit":"","url":"https://eflight.com/holders/pratt-whitney-canada-corp"}],"relation":"held by"},{"group":"Orders","items":[{"count":7,"name":"FAA orders on these designs","note":"","unit":"airworthiness directives","url":"https://eflight.com/certificates/E21NE"},{"count":null,"name":"2020-18-05: Fuel Control/Turbine Engines","note":"2020-10-07","unit":"","url":"https://eflight.com/directives/2020-18-05"},{"count":null,"name":"2019-22-03: Turbine Engine Reduction Gear","note":"2019-12-24","unit":"","url":"https://eflight.com/directives/2019-22-03"},{"count":null,"name":"2015-20-04: Reduction gearbox (RGB) assembly","note":"2015-11-18","unit":"","url":"https://eflight.com/directives/2015-20-04"},{"count":null,"name":"2004-20-04: Compressor rear hubs","note":"2004-10-18","unit":"","url":"https://eflight.com/directives/2004-20-04"}],"relation":"subject to"},{"group":"More","items":[{"count":null,"name":"Every type certificate","note":"","unit":"","url":"https://eflight.com/certificates"},{"count":null,"name":"Who holds what","note":"","unit":"","url":"https://eflight.com/holders"}],"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_document":"https://drs.faa.gov/browse/excelExternalWindow/1D9D41AD13FD117C86257547006E6309.0001","holder":"Pratt & Whitney Canada Corp.","id":"E21NE","models":["PT6B-37A","PT6B-37","PT6B-36","PT6B-36B","PT6B-36A"],"name":"Type certificate E21NE","product_type":"Engine","type":"certificate","url":"https://eflight.com/certificates/E21NE"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}