andby Indicator (IESI) provides backup attitude, airspeed, altitude, nay cues from NAV 1 or NAV 2, and VHF 2, ELT C406-N HM w/ Satellite Frequency, Electric Door Locks — Cabin, Flight Director Decouple Warning System with visual and aural warnings. Weather Related Systems: Weather Avoidance Radar - Primus 660, Wind