That flight controller firmware version is 4.2.3. During testing, it was found that the helicopter did not slow down when it landed below the set altitude LAND_ALT_LOW. In flight control version 4.1.5, it can slow down normally. We don’t know what’s wrong and beg for your help.
@Flying2015 The test I conducted in the simulator was with version 4.2.3. Did you test 4.3.0 in an actual aircraft? Did you have a log to post from that flight?