Second RMI needle points 180° in wrong direction
Has anyone ever had this strange curiosity?
We were flying with both RMI's and both RMI needles set to ADF1. Normally, all 4 needles, 2 in each RMI (Left RMI and Right RMI) should point toward the ADF. But instead only one needle in each RMI pointed to the ADF which was in front of us, and the other 2 needles pointed 180 in the wrong direction, behind us. Also when we chanded our heading , the 2 wrong indicating neeedles kept completely aligned with the two good working needles, but just with the tail up instead of the head up. Pretty strange thing. We re-selected the ADF/VOR buttons on the RMI to VOR, which was then correctly indicated on all 4 needles......reselecting the 4 needles to ADF, one in each RMI was then again pointing exactly 180° in the wrong direction.
Later on ground, we tried again and only after selecting a different ADF frequency, all 4 needles finally pointed in the same direction again. Then we selected the original frequency again, where we had these problemes, and all 4 pointed in the right direction.
Can it be possible, that these two wrong pointing needles were some kind of stuck but kept perfectly aligned with the 2 good indicating ones, also during heading changes...so they moved as well...so they couldn't really be stuck???? What might have been the reason for those problemes?
Thanks for possible solutions.....pretty strange thing.
Regards