Question: how old are crj 900?
Answer: On 19 February 2007, Bombardier launched the development of the CRJ1000, previously designated CRJ900X, as a stretched CRJ900, with up to 100 seats. The CRJ1000 completed its first production flight on 28 July 2009 in Montreal; the entry into service was planned then for the first quarter of 2010.