groundpounder wrote:
hello gary, i am a fairly new poster on this site but i do look forward to reading it every day!! i am a heavy duty engine mechanic by trade living in vancouver. i wholeheartedly sympathize with your crew and the situation that you fellows are in with your plane. the amount of work involved in a project of this magnitude is incomprehensible to many people. my question to you is, what has gone wrong here? i can understand one engine or maybe two engines sharing some common systems going down, but three out of four? you state that each unit in question is making metal fragments. is it the same failure in each engine or is that yet to be determined ? are these freshly overhauled units that have failed or have they each been limped along a bit knowing that this day might come? i wish you and all of your crew the best of luck through these certainly trying times. sim.
First of all, thank you to everyone for the kind words and support. We sincerely appreciate it. Second, to answer some of the questions above, I have asked the same thing...What has gone wrong here? I think about that every waking moment and most sleeping moments.
The #3 engine metal is definitely a nosecase coming apart. I have a complete tooth from one of the gears that has started eating itself. These -57 nosecases are notoriously junk. We were just somewhat fortunate to catch this one before it trashed the whole engine. I still think I can get #3 running again.
The #2 engine is more of a mystery to us right now. I've removed the nosecase off of it for various reasons, but am afraid that the metal that has gone through the engine may have done further damage. Too soon for me to know for sure right now.
The #1 engine metal is mostly brass. However, some aluminum and small amounts of steel are present. It is our initial thought that we have some valve guides somewhere coming apart. The cylinders on these -57s are also notoriously junk. This engine had just been installed on the airplane, as it had had multiple cylinders replaced and other warranty work completed. Needless to say, after paying roughly $145,000.00 for this engine to be overhauled a few years back and $175,000.00 for the overhaul on another engine from the same engine shop just last year, we are not very satisfied with how things are going right now.
I hope this helps answer some of your questions, and if you have any more, please feel free to shoot 'em to me.
Gary Austin