Hello, at that time ur prop is in normal governing mode or in mechanical mode? If fluctuation is in both modes then change v/Housing filter and then valve housing. Most probably cause of valve governor. Regards
Hello expertise T56-a-15 engine at abt 900 TIT when we open wing & empen anti icing TIT remains same but torque of respective engine increase, when close the torque decreases. if any body having good information plz share with us. Regards
Plz installed TD tester, it will identify the component which having problem, if u haven't TD tester and u replaced all components of TD system u also replace LT harness assy, it might be resolve ur problem.