Amazon.com: Airplane Cockpit Intercom ATC Radio Recording Cable with Power Cable Adapter Audio Cable for GoPro HERO3 / HERO3+ / HERO4 NOT for Hero 5 and UP : Electronics
GoPro Connect Cable to Intercom AUX port – Rugged Radios
NFlightCam Cockpit Kit for GoPro Hero9, Hero10, Hero11 Black – Nflightcam.com