San Antonio Sewer Pipe. I have about a 1000 hours in one of those damn things...Pel-Air Express often used our hangar for maintenance work in the olden days, I always liked the nickname for their Fairchild Metro lll aircraft "The DEATH PENCIL"
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Not to be used when near passengers.
I remember these were about the noisiest aircraft we had near our hangar, I was surprised that all that noise came out of such a tiny engine, OK I know it was mostly the props..... but still!
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