Hi, I have an early 2001 Rotax 912 ULS in my Flight Design CT2k and it is fitted with a basic oil pressure switch, I noticed the "Oil" indicator flicking on and off randomly a day ago and after a quick look the spade on the back of the oil pressure switch (not the connector on the end of the wire but the actual spade coming out the back of the switch) is loose where by you can literally wiggle it around with your finger.

Obviously I'm replacing it but I just wondered how these work, are they an always open switch that closes when oil pressure is present (so a broken switch/circuit would trigger the "Oil" warning), or always closed and open when oil pressure is up?

You can see the spade looking wonky in this photo (apologies it didn't focus well) and maybe even a small amount of oil on the switch itself.




9993_1_20230801_152445.jpg (You do not have access to download this file.)
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