Nick-3g Posted June 22, 2011 Share Posted June 22, 2011 Hi to all that read, This is my first post so I hope there are a few out there that might be able to help. What is your preferred method for calibrating the C130 compass systems. I have always used a datum compass to sight the aircraft heading. Is there a TO to cover that? I prefer this method over a MC testset swing. Thanks in advance Nick Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted June 23, 2011 Share Posted June 23, 2011 Compass swings always sucked... Tow and line up the aircraft, plumb bob and all.... set up the MC2, and its usually 30 degrees F or 103 degrees... Not sure what the process is now but I would think it still sucks... Quote Link to comment Share on other sites More sharing options...
Ravyn Posted June 26, 2011 Share Posted June 26, 2011 Yeah, compass swings have always sucked. The method I prefer to use is the INU method, which consists of towing the plane is slow circles for a couple of hours, and making different adjustments throughout. I think its become the preferred method now on planes with scns. Quote Link to comment Share on other sites More sharing options...
rdenn_58 Posted June 27, 2011 Share Posted June 27, 2011 I used a combo of a Compass Rose and INU. I relied on the INU heading while using the Compass Rose as a cross reference. Had to do a compass cal during a deployment and used the INU. First, had to be sure where we were swinging the aircraft to make sure weren't any metal under or near the location. Worked out fine. Quote Link to comment Share on other sites More sharing options...
tinyclark Posted June 27, 2011 Share Posted June 27, 2011 Just about everyone uses the INU method, since that is what the flight crew uses as a reference to write up the compasses being off. Quote Link to comment Share on other sites More sharing options...
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