{"as_of":"2026-10-08","attribution":"FAA and NTSB data via eFlight Registry (https://eflight.com)","connections":[{"group":"Flies","items":[{"count":4,"name":"Airbus Helicopters MBB-BK117 D-3","note":"","unit":"on the certificate","url":"https://eflight.com/models/airbus-helicopters/mbb-bk117-d-3"},{"count":2,"name":"Airbus Helicopters MBB-BK 117 C-2","note":"","unit":"on the certificate","url":"https://eflight.com/models/airbus-helicopters/mbb-bk-117-c-2"},{"count":4,"name":"Airbus Helicopters Inc","note":"","unit":"on the certificate","url":"https://eflight.com/makers/airbus-helicopters-inc"},{"count":2,"name":"Eurocopter Deutschland Gmbh","note":"","unit":"on the certificate","url":"https://eflight.com/makers/eurocopter-deutschland-gmbh"}],"relation":"flies"},{"group":"Where","items":[{"count":null,"name":"Houston, TX","note":"where it registers its own aircraft","unit":"","url":""},{"count":null,"name":"Conroe/North Houston Regional","note":"CXO","unit":"","url":"https://eflight.com/airports/CXO"},{"count":null,"name":"David Wayne Hooks Memorial","note":"DWH","unit":"","url":"https://eflight.com/airports/DWH"},{"count":null,"name":"Ellington Airport","note":"EFD","unit":"","url":"https://eflight.com/airports/EFD"},{"count":29858,"name":"Texas","note":"","unit":"aircraft registered","url":"https://eflight.com/states/TX"}],"relation":"based in"},{"group":"Certificates and records","items":[{"count":7,"name":"Memorial Hermann Health System","note":"the aircraft the FAA register lists under this name","unit":"aircraft in the fleet","url":"https://eflight.com/fleets/memorial-hermann-health-system"},{"count":6,"name":"FAA charter and air-taxi certificate","note":"designator GVNA","unit":"aircraft listed","url":""}],"relation":"holds"},{"group":"Aircraft","items":[{"count":null,"name":"N453MH","note":"Eurocopter Deutschland Gmbh MBB-BK 117 C-2","unit":"","url":"https://eflight.com/aircraft/N453MH"},{"count":null,"name":"N455MH","note":"Eurocopter Deutschland Gmbh MBB-BK 117 C-2","unit":"","url":"https://eflight.com/aircraft/N455MH"},{"count":null,"name":"N462MH","note":"Airbus Helicopters Inc MBB-BK117 D-3","unit":"","url":"https://eflight.com/aircraft/N462MH"},{"count":null,"name":"N464MH","note":"Airbus Helicopters Inc MBB-BK117 D-3","unit":"","url":"https://eflight.com/aircraft/N464MH"},{"count":null,"name":"N466MH","note":"Airbus Helicopters Inc MBB-BK117 D-3","unit":"","url":"https://eflight.com/aircraft/N466MH"},{"count":null,"name":"N467MH","note":"Airbus Helicopters Inc MBB-BK117 D-3","unit":"","url":"https://eflight.com/aircraft/N467MH"}],"relation":"lists on its certificate"}],"graph":"https://eflight.com/graph","graph_index":"https://eflight.com/graph/index.json","license":"https://creativecommons.org/licenses/by/4.0/","node":{"aircraft_listed":6,"base_city":"Houston","base_state":"TX","callsign":null,"certificate":"135","code":null,"designator":"GVNA","dot_authority":null,"id":"memorial-hermann-health-system","name":"Memorial Hermann Health System","type":"operator","url":"https://eflight.com/operators/memorial-hermann-health-system"},"source":"FAA Civil Aviation Registry, FAA airport file, NTSB accident database; assembled by eFlight Registry"}