AUX 4 LEGEND CAP, for ACP51, ACP53, N301A 55-06-AUX4

The 55-06-xxxx snap-in legends are for use with digital audio control systems (DACS) ACP51 and ACP53. These legends allow OEMs and/or installers to order ACPs and then be able to customize the radio text to best suite the com/nav package to the aircraft.