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Old May 22nd 20, 01:27 PM posted to rec.aviation.soaring
Tony[_5_]
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Posts: 1,965
Default New SB (SB-G09) on elevator pushrods for most all Grobs

I checked our Twin Astir. No water or rust flakes came out of the drilled hole. Just to be sure I found a 5.5mm diameter wifi borescope on Amazon and had a look inside. Looked clean to me.