![navigation - What are the differences between an OBS, a CDI, a Heading indicator, and an HSI? - Aviation Stack Exchange navigation - What are the differences between an OBS, a CDI, a Heading indicator, and an HSI? - Aviation Stack Exchange](https://i.stack.imgur.com/28T12.jpg)
navigation - What are the differences between an OBS, a CDI, a Heading indicator, and an HSI? - Aviation Stack Exchange
![navigation - What are the differences between an OBS, a CDI, a Heading indicator, and an HSI? - Aviation Stack Exchange navigation - What are the differences between an OBS, a CDI, a Heading indicator, and an HSI? - Aviation Stack Exchange](https://i.stack.imgur.com/6dhv3.jpg)
navigation - What are the differences between an OBS, a CDI, a Heading indicator, and an HSI? - Aviation Stack Exchange
![43 Microsoft Flight Simulator – Instrument Navigation, NDB, VOR, ILS, GPS – Flight Simulator Navigation 43 Microsoft Flight Simulator – Instrument Navigation, NDB, VOR, ILS, GPS – Flight Simulator Navigation](https://flightsimnavigation.files.wordpress.com/2021/05/8040-adf-ndb.jpg)
43 Microsoft Flight Simulator – Instrument Navigation, NDB, VOR, ILS, GPS – Flight Simulator Navigation
The interpretation of the HSI (Horizontal Situation Indicator) on the ILS Bearing respectively heading of the aircraft OBS - Omn
![navigation - What are the differences between an OBS, a CDI, a Heading indicator, and an HSI? - Aviation Stack Exchange navigation - What are the differences between an OBS, a CDI, a Heading indicator, and an HSI? - Aviation Stack Exchange](https://i.stack.imgur.com/oBARQ.jpg)