Skytrucker's question was well backed up with failure rates - I can't remember the figures now but I know it's bl**dy expensive at $22000 US a throw. We have troubles on the same operator with FFGs and IDGs I like the oil theory although Woodward Governor and Sundstrand ( the respective OEMs) say there is no correlation.
Throwing in different unit what do people know about the BSCUs and trouble shooting? Our NFF rate is 50% (industry average is a very high 25) Messier put this down to poor fault finding. Does the BSCU have too much to do for a single unit? I'd be interested to hear in any comments these things cost my company a fortune.