Editing Eurofighter Typhoon (section)

==Variants==
{{main|Eurofighter Typhoon variants}}

The Eurofighter is produced in single-seat and twin-seat variants. The twin-seat variant is not used operationally, but only for training, though it is combat capable. The aircraft has been manufactured in three major standards; seven Development Aircraft (DA), seven production standard Instrumented Production Aircraft (IPA) for further system development,<ref name="IPA" /> and a continuing number of Series Production Aircraft. The production aircraft are now operational with the partner nation's air forces.

The Tranche 1 aircraft were produced from 2000 onwards. Aircraft capabilities are being increased incrementally, with each software upgrade resulting in a different standard, known as blocks.<ref name="efb5" /> With the introduction of the block{{nbsp}}5 standard, the R2 retrofit programme began to bring all Tranche{{nbsp}}1 aircraft to that standard.<ref name="efb5" />