We've got a BAE Jetstream 32 equipped with a dual Collins 60A ADF system, and the co-pilot's side control head is:
displaying "FLAG 10" when we press the TEST button; We looked up the error code, but the only information we got is that the code corresponds to "ADF not locked in ADF mode" with no rectification. This is the first error of this type we've seen.
would not function for the last flight crew that flew it.
We tried replacing the controller, the signal adapter and the receiver. We've been banging our heads against this for hours. Anyone seen a similar failure, and know what we've been doing wrong?