On behalf of rsd653 I m replying all the ques u asked. We r still facing the same problem.
starter control vale is ok, bleed air shut off valve operating good, starter turbine is ok, compressor checked, found ok. bleed air duck found in good condition, speed sensitive valve replaced with a new one,TD amp replaced with a new one. But still problem is there. I mean Start TIT is 856'C.
Yes starting time we get 45 sec to reach 60% for starting at first. prop angle at grd idle is 4'. yes we've tried in null. Rigging also correct. Yes we Have changed the FCU also. But still result was same.
We have changed the speed sensitive valve with a new serviceable one. But we've not tried the high pressure out line at speed sensitive valve. Tomorrow we are going to do that. The result we get, I'll let u know.
We got some times 856, sometime 860'C also.
Yes we have tried high pr air also.
35psi+ with GTC.
we got 35% approx.
So friends, thanks all of u for all the replies u have given. We r really suffering a lot. Plz help us, how can we get rid of this high TIT prob. If u have any more queries plz ask. I'll answer as soon as possible. Our herculies is on ground for a long time. And we deadly want to see it air. Plz send your precious thinking and suggestions about the problem.
I m Waiting for your replies.