Passage: The aircraft was an 18-year-old Airbus A321-231, serial number 663. It first flew on 9 May 1997 and was delivered new to Middle East Airlines on 27 May 1997 with registration of F-OHMP. In 2003, it was leased by Onur Air and, beginning in 2007, it was subleased to Saudi Arabian Airlines and other carriers. In April 2012, Kolavia acquired the aircraft with a new registration of EI-ETJ and transferred it to Kogalymavia in May.At the time of the crash, the aircraft was owned by Dublin-based AerCap and leased to Kolavia. The aircraft had accumulated 56,000 flight hours on nearly 21,000 flights.On 16 November 2001, while operating for Middle East Airlines as F-OHMP, the aircraft suffered a tailstrike while landing in Cairo. It was repaired and returned to service with the airline in 2002.

Question: When did Onur Air lease the Airbus?
2003