Original sentence: On 11 April 2012, an MV-22 from the VMM-261 on  crashed near Tan Tan and Agadir, Morocco, during a joint training exercise, named "African Lion".investigators found no mechanical flaw with the aircraft
Edited sentence: On 11 April 2012, a mechanically perfect MV-22 from the VMM-261 on  crashed near Tan Tan and Agadir, Morocco, during a joint training exercise, named "African Lion"