REBAHAN4D Hollinger, Peggy; Buck, Tobias; Pitel, Laura (2 July 2018). "A400M: The €20bn military aircraft that has bedevilled Airbus. European militaries hope airlifter's troubles are behind it more than 15 years after launch". Shalal, Andrea (9 July 2016). "Interim fix for A400M engine issue certified: Airbus". In May 2022, Skytrax demoted Lufthansa from its aforementioned 5-star rating which it held since 2017 as the first European carrier to do so, to an overall 4-star rating.|What are AMBER Alerts?