{
  "url": "https://openlegislation.uk/air-navigation-general-amendment-regulations-1997/regulation-2",
  "json_url": "https://openlegislation.uk/air-navigation-general-amendment-regulations-1997/regulation-2.json",
  "legislation": "uksi/1997/881",
  "legislation_title": "The Air Navigation (General) (Amendment) Regulations 1997",
  "legislation_url": "https://openlegislation.uk/air-navigation-general-amendment-regulations-1997",
  "path": "regulation/2",
  "kind": "regulation",
  "number": "2",
  "heading": null,
  "text": "The Air Navigation (General) Regulations 1993 shall be amended as follows:\n(1) After regulation 18(1) there shall be inserted the following:\n“(1A) For the purposes of article 42(2) of the Air Navigation (No. 2) Order 1995, the following height keeping performance capability is hereby prescribed, that is to say, a capability to ensure that:\n(a) altimetry system error shall be in compliance with paragraph 2.1.1(2) of Document 7030/4-NAT Part 1 Rules of the Air, Air Traffic Services and Search and Rescue (ICAO Regional Procedures Fourth Edition—1987); and\n(b) (i) in respect of aircraft first registered in a Contracting State on or after 1st January 1997 altitude can be automatically controlled within a tolerance band of +/−65 feet;\n(ii) in respect of aircraft first registered in a Contracting State before 1st January 1997 altitude can be automatically controlled within a tolerance band of +/−130 feet.”\n(2) In regulation 18(2), for “from flight level 275 to flight level 400” there shall be substituted “from flight level 285 to flight level 420”.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "S.I. 1993/1622."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1997/881/regulation/2",
    "retrieved_at": "2026-10-29T12:17:52.336076+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."
}