HSI Select Source 123 Switch


Up to OverHead Panel
Left To Left Panel
HSI 123 Switch 

Right To Right Panel
Down to Bottom Panel

In TACAN or MLS, the horizontal situation indicator is supplied with data derived from the unit specified by the 1, 2, 3 switch. 1, 2, 3 switch selects one of the three TACAN or MLS units. When the HSI SELECT SOURCE switch is positioned to NAV, the HSI is supplied with data from the navigation processor, and the 1, 2, 3 switch is not used.




Non-normal Procedures

Normal Procedures




|  Homepage Flight Deck |
| Over Head Panel | Left Panel | Right Panel | Bottom Panel | Back Panel |