black scheme. The pressure transducers measured the effects of various weapons loads and external fuel tanks. In 2002 the aircraft undertook ASRAAM trials, completed carefree handling trials and commenced DASS decoy trials. Now retired and on display in the Milestones of Flight Gallery at the RAF Museum at Hendon. DA3 Weapons systems development. DA4 Radar and avionics development, now on display at the Imperial War Museum Duxford. In the process of being moved to Newark Air Museum, Nottinghamshire. DA5 Radar and avionics development, being upgraded to Tranche 2 standard. German and Spanish contract involved upgrading 130 Eurofighter Typhoon tranche 2 to latest AESA radar and avionics. DA6 Airframe development and handling. DA6 was lost in a crash in Spain in November 2002 after both engines failed. EADS Germany's DA1 was transferred to EADS-CASA. DA7 Navigation, avionics and missile carriage. Now retired in Cameri IAF. Instrumented production aircraft The instrumented production aircraft (IPA) are five production standard aircraft fitted with telemetry instruments for dedicated flight testing and further systems development. IPA1 Defensive Aids Sub System (DASS). IPA2 Air-to-surface weapons integration. IPA3 Air-to-air weapons integration. IPA4 Air-to-surface weapons integration and environmental development. IPA5 Air-to-surface and air-to-air weapons integration. IPA6 Converted Series Production Aircraft (BS031)—Tranche 2 Computer Systems. IPA7 Converted Series Production Aircraft (GS0029)—Full Tranche 2 Standard. IPA8 E-Scan radar, enhanced weapon integration and improvements to mission equipment. Series production aircraft These are the operational and training aircraft. The model is known as Typhoon in the United Kingdom and export markets and as EF-2000 in Germany, Italy and Spain. However, all Italian aircraft carry the "Typhoon" logo on their tails. Tranche 1 Initial Operational Capability, Basic Air Defence Capability Block 2 Air-to-air capabilities Block 5 Air-to-air and air-to-ground capabilities, Final Operational Capability (FOC) standard. All Tranche1 aircraft are being upgraded to Block5 capability through the Retrofit 2 (R2) programme. Tranche 2 Block 8 New hardware standard with new mission computer Block 10 Enhanced Operational Capability (EOC) 1, improved DASS, IFF Mode 5, Rangeless ACMI Air/Air—AIM-120C-5 AMRAAM, IRIS-T digital Air/Ground—GBU-24, GPS-guided weapons, ALARM, Paveway III & IV, Rafael LITENING III Block 15 EOC 2 Air/Air—METEOR, Air/Ground—TAURUS, Storm Shadow, Brimstone Block 20 EOC 3 Tranche 3 / Tranche 3A Incorporating EOC 3 and hardware support for EOC 4 Conformal fuel tanks, fibre optic cabling and computer upgrade, defensive system upgrades. The variants actually installed with the Captor-M mechanically scanned array radar because Captor-E AESA radar