I'm using the Engine Manual. (TRENT 900) The manual is specific as to manufacturer of the Oil Debris sensing kit. Specifically, the Master Chip Detector is Electric, it uses a current of electricity to find ferrous bits in the detector (It is not a permanent magnet). The Vickers 'Electric' Master Chip Detector. The Muirhead Vatric Screw in Chip detectors are permanent magnet type units.
The replacement of the Bearing in the LP Compressor was discussed by Old Engineer some time back. I think it was determined that replacing the bearing was a good thing, but did not (rather obviously) solve the main problem, the Harmonic, which caused the bearing to fail in the first place. RR is back into replacing parts rather than admit the true problem and have to either scrap or redesign and re-certificate the 900.
Last edited by bearfoil; 18th Feb 2011 at 05:40.