My partner was flying our RV-7a a couple days ago and suddenly the oil pressure sensor went offline (red X). We have a Dynon HDX primary display, connected through an Advanced ACM "red box." The oil pressure sensor is a Kavlico P4055-5025-6 G1017. The engine is an O-360. The oil pressure sensor was offline for 5 minutes. The rpm didn't change (we have a constant speed prop) so it wasn't an actual loss of oil pressure. The data log (half second recording interval) shows the pressure steady at 70-72 psi, a jump for half a second to 117 psi and then no reading for 5 minutes. Then it suddenly came back online at 65-70 psi. The fuel pressure and manifold pressure sensors share the same ground and +5 volt leads, and they read normally throughout the whole event. My partner landed at the nearest airport and did several ground runs with the pressure reading normally, then flew home. We checked the wiring in detail in the hangar today and could not find any fault or replicate the issue.
Has anyone else experienced this? Any further suggestions for troubleshooting other than just replacing the sensor? I hate it when critical instrumentation has a fault that we can't replicate. Any chance that it could be an issue in the SV-EMS-220?
Has anyone else experienced this? Any further suggestions for troubleshooting other than just replacing the sensor? I hate it when critical instrumentation has a fault that we can't replicate. Any chance that it could be an issue in the SV-EMS-220?