{"as_of":"2026-10-07","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Held by","items":[{"count":null,"name":"Air Repair INC.","note":"","unit":"","url":"https://eflight.com/holders/air-repair-inc"}],"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/51566F96F16478D586256BCE0070CF61.0001","holder":"Air Repair Inc.","id":"TC 121","models":["L-4","L-4 Series"],"name":"Type certificate TC 121","product_type":"Engine","type":"certificate","url":"https://eflight.com/certificates/TC 121"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}