Originally Posted by
maxxer
What surprises me is that knowing all off these sensors work with a minimal voltage or resistive change , just like in a car.
Bad grounding would ruin the reading of the value so quickly.
Then when i read the report of the Lion air they swap the sensor without investigeting , this is a brand new plane and already the sensor failed , no one thinks that there might be a problem with the wiring from the sensor to the fcc ?
Reminds me of my peugeot 205 there was smoke coming out of the indicator/wiper handle so i replaced it and it fried again because actually the wiring at the rear windscreen wiper was shorted against the frame.
Till now no one has brought up that the failure might have been in the wiring harness.
The maintance guy even cleaned the connector ! did he not know he was working on a brand new airplane ?
BDAttitude and
DaveReidUK have followed up on this
Maxxer you contradict yourself. You lambast the maintenance staff for replacing the sensor or cleaning the connector on a 'brand new' aircraft, yet then ask why did they not suspect the 'brand new' wiring in the same paragraph?
The main issue in that case was the maintenance staff were hung out to dry by the diabolical pirep written up by the previous crew. Granted theres nothing been said about what was handed over verbally but with an issue so serious it should have been documented in much more detail, taking several pages of the techlog if required.
And talking of cleaning connectors. You'd be surprised just how often connectors can be contaminated by stray fluids and the like or have a pin that's bent or disengaged so it's always worth a look. Especially with more and more fibre optics in connectors where clean connections are paramount.