![Taiwan, Province of China[a]](https://files.upgates.com/graphics/countries/tw.svg "Taiwan, Province of China[a]"){kind=small}
Features:
- Provides aircraft heading information on a calibrated servo-driven compass card read against a fixed lubber line
- Heading flag monitors servo error, compass valid, and instrument power
- Normally used with VIR-30/32 Navigation Receivers or ADF-60 ADF System
