on 20 august 2015, bombardier disclosed it had completed over 80% of the required certification tests for the cs100. on 14 october 2015, the company had completed over 90% of required tests for the cs100. accordingly, bombardier announced that the first production cs100 aircraft would soon commence function and reliability tests. the cs100 completed its certification testing program in mid-november 2015. on 25 november 2015, bombardier completed the first phase of its route proving capabilities, with a 100% dispatch reliability.