59-23-01-301, sht. 1, of which the structural aspects are DER approved by M. Lieblich, FAA DER SW-811. The C-2000 system wiring accomplished as per K-C Aviation Drawing: Radio Telephone, GIV-31085-23-98, of which the electrical/electronic aspects are DER approved by N. Kopesky, CHI-262. Existing wiring diagrams affected by the abo