Clark Headsets, one six-foot walk-around cord and two 30-foot walk-around cords, Cabin PA/Chime System, and a Passenger Briefing System - PBS 250. Backup/Safety Systems: Enhanced Ground Proximity Warning System, Universal 120 CVR, 3* Backup Airspeed Indicator and Altimeter, ADI-335D Standby Attitude Indicator with Nav1/Nav2 Select, ELT C406- N HM w/ Satelli