- 1). Purchase an aviation headset-to-iPhone adapter, such as the CellSet GA5000-2M.
- 2). Connect one end of the adapter to your iPhone's 3.5 mm headphone jack and the other ends to your instrument panel. The headphone and microphone connections plug in where your headset normally plugs in.
- 3). Connect your aviation headset to the adapter. Plug the two connections into the adapter in the appropriately labeled microphone and headphone jacks.
Source...