# The Ozone-Depleting Substances (Grant of Halon Derogations) Regulations 2021, Regulation 2: Interpretation


In these Regulations—
“halon 1301” means the substance of that name as described in Annex I of the Ozone-Depleting Substances Regulation.
“Ozone-Depleting Substances Regulation” means Regulation (EC) No 1005/2009 of the European Parliament and of the Council on substances that deplete the ozone layer.
“relevant applications” means—
(a) the engine nacelle fire suppression system in Apache AH-64E helicopters;
(b) the engine nacelle fire suppression system in Boeing E7 Wedgetail AEW Mk 1 aircraft; and,
(c) the auxiliary power unit fire suppression system in Boeing E7 Wedgetail AEW Mk 1 aircraft.

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Source: https://www.legislation.gov.uk/uksi/2021/1397/regulation/2 (the official version)
Page: https://openlegislation.uk/ozone-depleting-substances-grant-of-halon-derogations-regulations-2021/regulation-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.