{
  "url": "https://openlegislation.uk/air-navigation-noise-certification-order-1987/schedule-1/paragraph-1",
  "json_url": "https://openlegislation.uk/air-navigation-noise-certification-order-1987/schedule-1/paragraph-1.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": "schedule/1/paragraph/1",
  "kind": "paragraph",
  "number": "1",
  "heading": "Noise standards required for issue of a noise certificate to aeroplanes specified in articles 6(2), (6) and (9)",
  "text": "In this Part of this Schedule—\n“the noise certification reference conditions” means conditions in which—\n(i) atmospheric pressure at sea level is 1013.25 millibars;\n(ii) ambient air temperature is 25°C;\n(iii) relative humidity is 70%;\n(iv) there is zero wind; and\n(v) the maximum take-off and landing weights of the aeroplane are those at which noise certification is requested by the applicant for the certificate.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1987/2212/schedule/1/paragraph/1",
    "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."
}