(5) For the purposes of paragraph (4), where a body corporate registered outside the United Kingdom, or a partnership established outside the United Kingdom, has an office in the United Kingdom, the principal office of the body corporate or partnership is its principal office in the United Kingdom. 

(6) For the purposes of paragraph (4)(c), where the person is an aeroplane operator, the proper address includes an address derived from information supplied by Eurocontrol( a ). 

## PART 3 

## Monitoring, reporting and verification (“MRV”) of aeroplane operator annual CO$_{2}$ emissions 

## Applicability of MRV requirements 

## CHAPTER 1 

## General 

21. —(1) The requirements of this Part apply to an aeroplane operator that produces annual CO$_{2}$ emissions greater than 10,000 tonnes from the use of one or more aeroplanes with a maximum certificated take-off mass greater than 5,700 kg conducting international flights. 

(2) The requirements of this Part apply to a new entrant aeroplane operator from the year after it meets the requirements in paragraph (1). 

## Monitoring of CO$_{2}$ emissions: Eligibility of monitoring methods 

## Monitoring of aeroplane operator annual CO$_{2}$ emissions 

## CHAPTER 2 

22. —(1) An aeroplane operator must monitor and record its fuel use from international flights in accordance with an eligible monitoring method set out in paragraphs (3) to (6) for the 2019-2020 period and paragraphs (7) to (12) for the 2021-2035 period, and approved by the Regulator. 

(2) Following approval and issue of its Emissions Monitoring Plan in accordance with article 24, an aeroplane operator must use the same eligible monitoring method for the entire compliance period( b ). 

2019-2020 period 

(3) Where an aeroplane operator has, prior to this Order coming into force, accumulated any fuel use during the period of 2019-2020 pursuant to article 3 of Commission Implementing Regulation (EU) 2019/1603( c ), that fuel use data must be used for the purpose of this Order. 

(4) An aeroplane operator with annual CO$_{2}$ emissions from international flights greater than or equal to 500,000 tonnes must use a Fuel Use Monitoring Method set out in Schedule 2. 

(5) An aeroplane operator with annual CO$_{2}$ emissions from international flights of less than 500,000 tonnes must use either a Fuel Use Monitoring Method or the CERT set out in Schedules 2 and 3, respectively. 

