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And how many different repair approvals do you actually have then?

If we took a compressor blade, you might have three or four repairs on it. You would always have the tip repair because, as the blade rotates in the engine, it rubs against the lining within the casing. So, you always weld repair the tip and restore the height, which then requires a machining operation and heat treatment. So there you've got three repairs; the weld, the machining and the heat treatment. You then might have a coating on that blade, as well.

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