Search the Community
Showing results for tags 'Engine Turbo damage FOD'.
Found 1 result
-
Started my annual today and discovered the turbo compressor impeller damaged. One blade had a chunk missing, Others were bent or nicked. Looks as if something was ingested as high turbo RPM. The question is what. We see no signs that anything could have come through/around the air filter. That leaves the alternate air intake. We are surmising that during run up for take off the intake opened somewhat and a small rock or something similar got kicked up and was ingested. It is just a strange angle to have something kicked up from the nose tire into the open cowl flap and then into the alternate air intake. It would have to be a one-in-a-million shot. Tomorrow, we are pulling the turbo (after the Mouse Milk frees the exhaust bolts). We are going to use a borescope to make sure no foreign objects are downstream of the turbo. Needless to say, I was very surprised to see the damage to the impeller. Has anyone see this before? Anything else I should be looking at/for? - Dave
