Last year we had issues with a local power plant who's overhead crane system was interferring with our aircraft on a channel in the low 30's.. It does happen! And if it happens in one direction (crane interferrs with aircraft), then it could happen in the other direction (up elevator = load release? BAD!)

They since repaired their controls and we've not had more issues. We think... A couple planes in the 30's range did have troubles a week ago, but hits or errors, we weren't sure.

J