Twenty-eight members of the European Parliament have sent a joint letter to leaders of the International Civil Aviation Organization (ICAO) and the EU to express concern over China’s unilateral decision to alter the M503 flight path.

The letter, which was sent on Wednesday last week, was addressed to ICAO Council President Salvatore Sciacchitano, European Commission President Ursula von der Leyen, European Council President Charles Michel, EU High Representative for Foreign Affairs and Security Policy Josep Borrell, European Commissioner for Climate Action Frans Timmermans and European Commissioner for Transport Adina Valean.