The compass card of the HSI does not rotate to show
compass heading at the rhumb line-it remains frozen
at whatever heading it read at start on runway.
It should rotate clockwise when the plane turns left and counterclockwise when the plane turns right.
As a result, pilot is forced to rely on HUD only for magnetic
heading.
On runway 14 at KBFM it read 320, where it remained
during flight. On 03 at KNPA, it read 260, where it also
remained during flight.
Sure wish it could be fixed; otherwise, the MB-339 is a great model.
Best Regards