(2) A verification body must conduct the verification according to ISO 14064-3:2006, and the  relevant requirements in paragraph 3 of Schedule 6.  (3) Following the verification of the Emissions Report by the verification body, the aeroplane  operator and the verification body must both independently submit, upon authorisation by the  aeroplane operator, a copy of the Emissions Report and associated Verification Report to the  Regulator, in accordance with the timeline set out in Schedule 1.  (4) The Regulator must perform an order of magnitude check of the Emissions Report in  accordance with the timeline set out in Schedule 1 to assess the completeness of the data provided  in that report.  (5) To facilitate order of magnitude checks and ensure the completeness of reported data, and  where necessary to support the implementation of the requirements in this Order, the Regulator  may agree to share with another State’s regulator, specific data and information contained in an  aeroplane operator’s Emissions Report where that aeroplane operator performs flights to and from  the State of the requesting regulator.  (6) The Regulator must inform any relevant aeroplane operator about such a request for that  information.  (7) In the absence of an agreement between the two States, this information must not be  disclosed to third parties.  (8) A Regulator must provide the name of the verification body used to verify an Emissions  Report on being asked for the disclosure of information by the regulator of another State.  36. —(1) Fuel purchases, transaction reports, fuel blending records and sustainability credentials  must constitute the documentary proof for the purpose of verification and approval of emissions  reductions from the use of CORSIA eligible fuels.  (2) An aeroplane operator must ensure that it, or its designated representative, has audit rights  over the production records for the CORSIA eligible fuels that it purchases( a ).  37. —(1) An aeroplane operator using a Fuel Use Monitoring Method, as described in Schedule  2, must fill data gaps using the CERT, as described in Schedule 3, provided that the data gaps  during a compliance period do not exceed the following thresholds—  (2) The aeroplane operator must correct issues identified with the data and information  management system in a timely manner to mitigate ongoing data gaps and system weaknesses.  (3) If the aeroplane operator realises it has data gaps and system weaknesses that exceed the  threshold in paragraph (1), it must engage with the Regulator to take remedial action to address  this.  ( a ) The quality control assurances of CORSIA eligible fuel producers include declarations and/or process certifications, with  periodic audits by verifiers, purchasers, or trusted entities. The process certifications, including the sustainability  credentials, provide assurance that the CORSIA eligible fuel producer has established business processes to prevent double  counting, and the periodic audits verify that the producer is following their established procedures. Purchasers and States  may elect to independently audit the production records of the CORSIA eligible fuel producer in order to provide further  assurance.  ( b ) “CORSIA States for Chapter 3 State Pairs” is available from the ICAO website at www.icao.int. For a hard copy contact the  ICAO E-Commerce and Publications Sales Unit at International Civil Aviation Organisation (ICAO), 999 Robert-Bourassa  Boulevard, Montreal, Quebec H3C 5H7, Canada (telephone +1 514-954-8219 and e-mail sales@icao.int).  21 (a) 2019-2020 period: 5 per cent of international flights;  (b) 2021-2035 period: 5 per cent of international flights between State Pairs defined in the  ICAO document entitled “CORSIA States for Chapter 3 State Pairs”( b ).  CHAPTER 5  Data management and control  Data gaps  Verification of sustainable aviation fuels 