Send custom data from rpi through flight controller to GSC

I am quite new to mavlink, so sorry if this is a silly question. I have a drone that has a flight controller running ardupilot. It is connected to a rpi zero through telemetry 2 port. It is also connected to ground station through a Sik telemetry radio. I will have GPSD and airodump-ng running on the pi. I want to sent the data logged by airodump to ground station via the flight controller using mavlink protocol. Is this possible without changing the ardupilot firmware on the flight controller? If so how can I do this. At the moment I am using pixhawk4 as the flight controller but I plan on this being kakute f7 in the future.