5-23-20; VHF NAV/DME Moth, GIV-31085-34- 26; ADE System Mods, GIV-31085-34-32; ATC System Moth, GIV-31085-34-35; Control Heads, GIV- 31085-34-37; and FMS Mods, GIV-31085-34-58, which is electrically equivalent to the aforementioned STC. FAA Approved Airplane Flight Manual Supplement, 62743606-340 dated 5/