{"as_of":"2026-10-08","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Where","items":[{"count":null,"name":"Fort Washington, MD","note":"the town on the certificate","unit":"","url":""},{"count":2340,"name":"Maryland","note":"","unit":"aircraft registered","url":"https://eflight.com/states/MD"},{"count":8,"name":"Aircraft registered in Fort Washington","note":"","unit":"registered","url":"https://eflight.com/aircraft?city=Fort Washington&state=MD"}],"relation":"works in"},{"group":"Certificate","items":[{"count":null,"name":"FAA repair station certificate (Part 145)","note":"2DPR879B","unit":"","url":""},{"count":1,"name":"Other locations of D&P Testing INC","note":"","unit":"certificates","url":"https://eflight.com/repair-stations/d-p-testing-inc-2dpr879b#locations"}],"relation":"holds"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"certificate":"2DPR879B","city":"Fort Washington","country":"United States","id":"d-p-testing-inc-2dpr879b","name":"D&P Testing INC","state":"MD","type":"repair-station","url":"https://eflight.com/repair-stations/d-p-testing-inc-2dpr879b"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}