Left HSI Frozen & AP1 Navigation Issues (INS Mode)

[DerSchallwerker]

am reporting a specific issue regarding the Pilot-side instrumentation and Autopilot 1 behavior while using the INS for navigation.

Even though all three INS units are fully and correctly aligned, I am experiencing a freeze on the left-side HSI. While the bearing needle on the HSI still rotates to point toward the waypoint, the distance (DME) readout remains completely frozen and does not count down. TConsequently, when AP1 is engaged in INS mode, the aircraft fails to track the route and begins to fly in circles.

The strange part is that the Co-Pilot's side (right) works perfectly fine. If I switch the flight to AP2, the aircraft immediately captures the track and flies the route as intended. On the right HSI, all data (distance and time) is updated correctly in real-time. This issue seems restricted to the left-side HSI and its connection to AP1.

I now had this two times.

 

Edited 17 hours ago by DerSchallwerker

[IniJamir]

I have passed this along to the team.

[zbrainlezz]

I had this problem on both of the two flights I've attempted with the TriStar so far, and it somehow never occurred to me to look at the F/O's HSI to see whether it was working - I just flew the rest of the flight using the GPS instead.

I also noticed that, while this problem was occurring, the INS didn't seem to automatically sequence the waypoints, even though the selector was set to AUTO. Possibly related?