{
  "url": "https://openlegislation.uk/air-navigation-fourth-amendment-order-1973",
  "json_url": "https://openlegislation.uk/air-navigation-fourth-amendment-order-1973.json",
  "id": "uksi/1973/71",
  "title": "The Air Navigation (Fourth Amendment) Order 1973",
  "short_title": "Air Navigation (Fourth Amendment) 1973",
  "long_title": null,
  "citation": "S.I. 1973/71",
  "type": "uksi",
  "year": "1973",
  "number": "71",
  "version": "current",
  "date": null,
  "revised": false,
  "valid_from": null,
  "extent": null,
  "unapplied_effects": 1,
  "provisions": [],
  "has_text": false,
  "pdfs": [
    {
      "title": "Printed copy",
      "main": true,
      "language": null,
      "date": "1973-01-25",
      "size": null,
      "url": "https://openlegislation.uk/air-navigation-fourth-amendment-order-1973/pdf/uksi_19730071_en.pdf",
      "source_url": "https://www.legislation.gov.uk/uksi/1973/71/pdfs/uksi_19730071_en.pdf"
    }
  ],
  "outstanding_effects": [
    {
      "type": "revoked",
      "affected_provisions": "Instrument",
      "affecting": "uksi/1974/1114",
      "affecting_title": "The Air Navigation Order 1974",
      "affecting_provisions": null
    }
  ],
  "made_under": [],
  "changes_made_to": 1,
  "changes_made_to_url": "https://openlegislation.uk/air-navigation-fourth-amendment-order-1973/changes.json",
  "changes_made_by": 0,
  "changes_made_by_url": "https://openlegislation.uk/air-navigation-fourth-amendment-order-1973/changes/by-it.json",
  "instruments_made_under": 0,
  "instruments_made_under_url": "https://openlegislation.uk/air-navigation-fourth-amendment-order-1973/instruments.json",
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1973/71",
    "retrieved_at": "2026-10-29T22:20:30.168605+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}