Complex sentence: On 7 September 2010, the Tupolev Tu-154M RA-85684 aircraft suffered a complete electrical failure en route, leading to a loss of navigational systems.
Split into simpler sentences: On 7 September 2010, it was operated by Tupolev Tu-154M RA-85684. En route, the aircraft suffered a complete electrical failure, leading to a loss of navigational systems.