Examples of use of MR1
1. The Nimrod MR1 entered service in 1'6' and was updated to the MR2 standard in the late 1'70s.
2. One, dated December 2005, said that XV230 had "fuel–leak issues" which needed to be rectified, while another from February last year warned that the age of the airframe combined with the high tempo of operations was adding to the "leak headache". The Nimrod MR1 – which is based on the design of Britain‘s first airliner, the de Havilland Comet – first entered service with the RAF in 1'6', and was upgraded to the MR2 version in the late 1'70s.