its a Modellbau t-500.Manual states after 100 cycles unit must be returned to Modelbau USA for inspection.This was not really my turbine of choice,but I bought RTF in Boomerang.At time of purchase I was unaware of 100 cycle inspection.It is definently something I will consider when buying another turbine.I think it has about 13 hours at 97 cycles.After 97 cycles the ecu quit sending power to glow plug,so I sent in 3 starts early. I am just a little worried that communications from Modelbllua has been kind of slow.I don't want a miracle just want to be told what to expect,good or bad.