# The Public Health (Aircraft) Regulations 1979, Regulation 18


(1) The medical officer shall inspect any aircraft and the persons carried thereon as soon as possible and in any case within 3 hours after it has been detained under these regulations.
(2) If the aircraft is one to which the authorised officer is required by these regulations to apply any further or additional measure, or if after such inspection the medical officer considers it necessary to apply any further or additional measure under these regulations, the medical officer may continue the detention of the aircraft, if such continued detention is necessary for the application of that further or additional measure.

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Source: https://www.legislation.gov.uk/uksi/1979/1434/regulation/18 (the official version)
Page: https://openlegislation.uk/public-health-aircraft-regulations-1979/regulation-18
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.