Malaysian officials non-committal on MH370 ACARS transmissions - 3/11/2014 - Flight Global
Officials investigating the disappearance of a Malaysia Airlines Boeing 777-200ER are tight-lipped about Aircraft Communications and Reporting System (ACARS) data reported by the aircraft.
WHY?
Nonetheless, ACARS data proved crucial for gaining an early understanding of Air France flight AF447, which crashed 1 June 2009. Within three days of this aircraft’s disappearance investigators released ACARS data, revealing that the aircraft had transmitted a number of failure reports for various aircraft systems.