United Kingdom - the Civil Aviation Authority (CAA) said in a statement "There are currently five Boeing 737 Max 8 aircraft registered and operational in the United Kingdom," "The US Federal Aviation Administration (FAA) is responsible for certifying all Boeing 737 Max 8 models and it is the European Aviation Safety Agency (EASA) that validates this certification across the EU, including the UK," and that "the CAA is working closely with the EASA".[1]