{
  "url": "https://openlegislation.uk/air-navigation-noise-certification-order-1987/article-4",
  "json_url": "https://openlegislation.uk/air-navigation-noise-certification-order-1987/article-4.json",
  "legislation": "uksi/1987/2212",
  "legislation_title": "The Air Navigation (Noise Certification) Order 1987",
  "legislation_url": "https://openlegislation.uk/air-navigation-noise-certification-order-1987",
  "path": "article/4",
  "kind": "article",
  "number": "4",
  "heading": "Application of Order",
  "text": "This Order shall apply to—\n(a) every propeller driven aeroplane having a maximum total weight authorised of 9,000 kg or less;\n(b) every aeroplane which is capable of sustaining level flight at a speed in excess of Flight Mach 1.0, being an aeroplane in respect of which applicable standards are specified in article 6(9) of this Order;\n(c) every aeroplane having an empty weight not exceeding 150 kg, a lifting surface area of not less than 10 square metres and a lifting surface loading not exceeding 10 kg per square metre at empty weight and which is designed to carry not more than two persons;\n(d) every other subsonic aeroplane which in accordance with its certificate of airworthiness has a take-off distance required, at maximum total weight authorised on a hard level runway in still air in an International Standard Atmosphere at sea level, of more than 610 metres;\n(e) every helicopter, being a helicopter in respect of which applicable standards are specified in article 6(10) of this Order.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1987/2212/article/4",
    "retrieved_at": "2026-10-29T16:14:23.751165+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."
}