Originally Posted by
flynavyj
I've seen phantom localizers as well, and watched the autopilot capture and try to follow it, there are a couple airports that it's happened at, but i cant remember which ones. Also had a situation in MKE with a localizer bouncing moving from side to side, half scale deflection and immediately back the other way.
I had this happen while flying the ERJ135 for Eagle. We were being vectored for an ILS 22 at JFK and the autopilot suddenly thought it captured a localizer and began turning. We were about 80 degrees from the actual localizer when it turned. I turned the autopilot off and handflew the rest of the approach raw data. I didn't trust the AP/FD at all.