![](https://butlernational.com/wp-content/uploads/2023/10/directisyn-dn104-on-metal-shelf-1024x683.jpg)
- Directisyn 501-1162-01 DN-104 A
- Directisyn 501-1162-02 DN-104 B
- Directisyn 501-1162-03 DN-104 C
The Directisyn provides heading information to the aircraft control systems. Butler Avionics provides exclusive repair and overhaul service for certain “JET” gyro (gyroscopic) systems.