March 1984, it was powered by the same RB.199 Mk 103 engines used by the IDS Tornado, capable of four wing sweep settings, and fitted to carry only two underwing Sidewinder missiles. Serious problems were discovered with the Foxhunter radar, which meant that the aircraft were delivered with concrete and lead ballast installed in the nose as an interim measure until they could be fitted with the radar sets. The ballast was nicknamed Blue Circle, which was a play on the Rainbow Codes nomenclature, and a British brand of cement called Blue Circle. Tornado F3 Quantity production of the Tornado ADV commenced in 1980 and continued through to 1993. On 20 November 1985, the Tornado F3 made its maiden flight. Enhancements over the Tornado F2 included RB.199 Mk 104 engines, which were optimised for high-altitude use with longer afterburner nozzles, the capacity to carry four underwing Sidewinder missiles rather than two, and automatic wing sweep control. Upon its entrance into service, the principal armament of the Tornado F3 was the short-range Sidewinder and the medium-range Skyflash missiles, the latter being a British design derived from the American AIM-7 Sparrow. Perhaps the most prominent of the innovations incorporated into the Tornado F3 was an automatic maneuver device system that enabled the flight control computer to automatically adjust the level of wing sweep for the purpose of maintaining optimum flight characteristics. This function was similar in concept to the automatic sweeping wing (ASW) capability of the American Grumman F-14 Tomcat, a capability that greatly enhanced maneuverability, but was not present on any previous Tornado IDS and ADV models. During 1989, the Tornado F.3 (originally F.Mk3) was declared operational. Capability Sustainment Programme In order to maintain the Tornado F3 as an effective platform up to its planned out-of-service date of 2010, the Ministry of Defence initiated the Capability Sustainment Programme (CSP). This £125 million project, announced on 5 March 1996, involved many elements, including the integration of the ASRAAM and AIM-120 AMRAAM air-to-air missiles, and radar upgrades to improve multi-target engagement. Additionally, pilot and navigator displays would be improved, along with the replacement of several of the onboard computer systems. The CSP saw the removal of a non-standard state of aircraft; various upgrades, in particular to the Foxhunter radar, had led to a situation described as "fleets within fleets". The Foxhunter radar caused difficulties in the upgrade programme, in particular the integration of