cowl flaps
My 67 337B has the early followup system, and would like to change to manuel. Has anyone installed the manuel STC on market. I lube mine - and all others - flap folowup, mixture, throttles, etc at annual time, or when needed.
To keep water out of the avionics compt I keep the access panel sealed with polyseam seal, takes a minute to unseal and gain access, and reseal.
Ed C.
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