Abstract :
One parameter that greatly affects engine performance is the inter Turbine
Temperature (ITT), Inter Turbine Temperature is the engine's internal
temperature between the compressor turbine and the power turbine. When the
Inter Turbine Temperature indicator shows the temperature is outside the normal
limit, then this is an indication of a problem with the engine, and has the potential
to endanger flight safety.
The failure analysis that appears on the increase in the Inter Turbine
Temperature is based on observations and information obtained from the field
instructor. In addition to using the observation method, this study also uses the
fault tree analysis method to find the cause of the high level of inter turbine
temperature problem.
After knowing the problem, an inspection and troubleshooting process is
carried out to resolve and overcome these problems. Perform inspection
troubleshooting inspection Based on Ref. T.O. 1 T-KT1B-22 REV. A, page 5-
91.92) regarding the increase in the high level of Inter Tubine Temperature, and
it was found that the problem causing the high level of Inter Turbine Temperature
was the excessive amount of compressed air supply caused by the compressor
bleed valve component which is in charge of regulating the air entering the
compressor. stuck close / unable to open.