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transponder

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  1. ScottyW

    Adding a transponder confusion

    Please help me wrap my brain around adding a Trig TT22 to my certified J3. There are no J3 models listed in the Trig STC AML. Am I correct in thinking that if I add the Trig TT22 and EN70 encoder, I will have no avenue to certify the installation and therefore render my plane experimental...
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