Bombardier's CRJ900 backlog for the 2nd quarter of 2013 shows a reduction of eight units after an unidentified customer(s) cancelled its order(s).
An analysis of the CRJ900's backlog shows only four customers: Delta Air Lines (40), Iraqi Government (4), Tatarstan Aircompany (4), and Adria Airways (1). It is believed that the cancellations are from the Iraqi Government and Tatarstan Aircompany.
Tatarstan placed an order for six CRJ900s in 2007, but only took delivery of two, both in 2007. The type never entered service with Tatarstan and the two aircraft are now in service with Mesa Airlines.
The Iraqi Government ordered six CRJ900s in March 2008 with a followup order for four more in April 2008. The initial six aircraft were delivered between 2008-2011, but the remaining four CRJ900s, built in early 2012, remain stored at Montreal.
If correct, this leaves the CRJ900's backlog hinged on Delta's order for 40. Adria Airways' remaining one CRJ900, placed in 2007 as a CRJ1000 model but switched to a CRJ900 model in early 2009, is not expected to be delivered.