It would appear that the marching army problem has returned. This is the first flight we've seen it on for a while. This was on ER-2 aircraft 809. We had switched from aircraft 806 to 809 for the flight on 3/10/2003 however the marching army doesn't ever show up til the ferry flight back on the 14th. It appears to be at the 90 Hz frequency and then mysteriously stops at 1:27.

The next group of test flights out here will be on 806 so I doubt we'll be seeing it anymore. Another thing to note is that the spikes of the marching army were not nearly as high as they have been in the past, I had to modify the code slightly to detect them and I only looked at the HBB as its much easier to see in there. For more information on the marching army please click here to read the website I wrote up a while ago.


sh030314/:

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