{
  "url": "https://openlegislation.uk/rules-of-the-air-regulations-1991/schedule/crossheading-visual-flight-rulesn2/paragraph-25",
  "json_url": "https://openlegislation.uk/rules-of-the-air-regulations-1991/schedule/crossheading-visual-flight-rulesn2/paragraph-25.json",
  "legislation": "uksi/1991/2437",
  "legislation_title": "The Rules of the Air Regulations 1991",
  "legislation_url": "https://openlegislation.uk/rules-of-the-air-regulations-1991",
  "path": "schedule/crossheading/visual-flight-rulesn2/paragraph/25",
  "kind": "paragraph",
  "number": "25",
  "heading": "Flight within controlled airspace",
  "text": "(a) Within Class B airspace:\n(i) an aircraft flying within Class B airspace at or above flight level 100 shall remain clear of cloud and in a flight visibility of at least 8 kilometres;\n(ii) an aircraft flying within Class B airspace below flight level 100 shall remain clear of cloud and in a flight visibility of at least 5 kilometres.\n(b) Within Class C, Class D or Class E airspace:\n(i) an aircraft flying within Class C, Class D or Class E airspace at or above flight level 100 shall remain at least 1500 metres horizontally and 1000 feet vertically away from cloud and in a flight visibility of at least 8 kilometres;\n(ii) an aircraft flying within Class C, Class D or Class E airspace below flight level 100 shall remain at least 1500 metres horizontally and 1000 feet vertically away from cloud and in a flight visibility of at least 5 kilometres.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [
    {
      "type": "substituted",
      "affecting": "uksi/1994/1444",
      "affecting_title": "The Rules of the Air (Third Amendment) Regulations 1994"
    },
    {
      "type": "amended",
      "affecting": "uksi/1994/1444",
      "affecting_title": "The Rules of the Air (Third Amendment) Regulations 1994"
    },
    {
      "type": "added",
      "affecting": "uksi/1994/1444",
      "affecting_title": "The Rules of the Air (Third Amendment) Regulations 1994"
    },
    {
      "type": "revoked",
      "affecting": "uksi/1994/1444",
      "affecting_title": "The Rules of the Air (Third Amendment) Regulations 1994"
    },
    {
      "type": "substituted",
      "affecting": "uksi/1994/1444",
      "affecting_title": "The Rules of the Air (Third Amendment) Regulations 1994"
    },
    {
      "type": "revoked",
      "affecting": "uksi/1994/1444",
      "affecting_title": "The Rules of the Air (Third Amendment) Regulations 1994"
    },
    {
      "type": "revoked",
      "affecting": "uksi/1993/254",
      "affecting_title": "The Rules of the Air (Amendment) Regulations 1993"
    },
    {
      "type": "amended",
      "affecting": "uksi/1993/254",
      "affecting_title": "The Rules of the Air (Amendment) Regulations 1993"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1991/2437/schedule/crossheading/visual-flight-rulesn2/paragraph/25",
    "retrieved_at": "2026-10-29T14:35:16.188248+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."
}