 The first test engine consisted of only the core module (named ""Kabini""), while the third engine was the first example fitted with variable inlet guide vanes (IGV) on the first three compressor stages.The "Kabini" core engine first ran in March 1995.Test runs of the first complete prototype "Kaveri" began in 1996 and all five ground-test examples were in testing by 1998; the initial flight tests were planned for the end of 1999, with its first test flight in an LCA prototype to follow the next year.