Intermittent (electronic?)breakdown
in 912 / 914 Technical Questions
7 years ago
I would like your opinion on this intermittent "breakdown": today having a one hour flight without any problem, at the time of cutting the engine, slowed down 1800 tr, cut 1st “magneto” (2 seconds of wait), 2nd magneto (again 2 seconds of wait) but then a big slow down #1400tr!
Strange; I thus decide to restart (with no problem at all) and to make a motor test at 4000 tr. 1st magneto, loss of 150 tr (normal), 2eme magneto and then, loss of 1300 tr!
After 5 minutes and a quick visual motor inspection, everything is normal. After lunch (2 hours latter), everything is normal. Flight back 1 hour; everything is normal. Ambient temperature 25°C (we are after the heat wave).
To note, 2 months ago at the time of cutting the engine (after always the same procedure), it doesn’t stop and continue during approximately 5 seconds before finally cut.
I suspect one of the electronic module (noted "RIGHT" on key; but which one is it? How to test it?), the key of Neman (faulse contact?), how test it?
Thanks in advance for support.
Strange; I thus decide to restart (with no problem at all) and to make a motor test at 4000 tr. 1st magneto, loss of 150 tr (normal), 2eme magneto and then, loss of 1300 tr!
After 5 minutes and a quick visual motor inspection, everything is normal. After lunch (2 hours latter), everything is normal. Flight back 1 hour; everything is normal. Ambient temperature 25°C (we are after the heat wave).
To note, 2 months ago at the time of cutting the engine (after always the same procedure), it doesn’t stop and continue during approximately 5 seconds before finally cut.
I suspect one of the electronic module (noted "RIGHT" on key; but which one is it? How to test it?), the key of Neman (faulse contact?), how test it?
Thanks in advance for support.
