| Control / Indicator |
Function |
| 1. Annunciator |
Moves left (+) or right (•) to indicate
nonsynchronization or oscillates between (+) and (•) to indicate synchronization. |
| 2. MAG-DG Switch |
|
MAG
|
Provides magnetically slaved information. |
DG
|
Provides for free directional gyro operation. |
| 3. Synchronizing Control |
Corrects heading indication when operating in the MAG mode or
used as a heading set knob in the DG mode as shown by annunciator null. |
The gyro magnetic compass AN/ASN-43 set is a directional sensing system which provides
an accurate visual reference indication of magnetic heading (MAG) of the helicopter. The
information provided by the system is used for navigation and to control the flight path
of the helicopter. The system may also be used as a free directional gyro (DG) in areas
where magnetic reference is unreliable. The compass set supplies information to the
Horizontal Situation Indicator (HSI) located on the pilot instrument
panel and a course indicator (RMI) located on the gunner instrument panel. The compass
system functions as determined by the compass controller controller
C-6347( ) / ASN-43 located in the pilot right console.
