{"as_of":"2026-10-08","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Held by","items":[{"count":null,"name":"Trw Hartzell Propeller","note":"","unit":"","url":"https://eflight.com/holders/trw-hartzell-propeller"}],"relation":"held by"},{"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/08D13BE41AC1BB5F85256713004F93A8.0001","holder":"TRW Hartzell Propeller","id":"P-917","models":["HC-D2X20-7","HC-D2X20-8","HC-D2X20-3"],"name":"Type certificate P-917","product_type":"Propeller","type":"certificate","url":"https://eflight.com/certificates/P-917"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}