Does anyone yet know if and why this phenomena is confined to Trent powered 777's, and what Boeing and/or RR has changed in the design?
Does anyone know why this phenomena has occurred only once in one 777 and only in one aircraft fueled from the same source that day? The conditions listed in the finding have all been repeated without incident many, many times. I would expect an inherent design weakness issue to reoccur at least transiently. One can call it a rare anomaly, except that here it happened in two autonomous engine fuel/oil heat exchangers at almost the same instant. All they had in common within the scope of this finding was the fuel system design, the fuel supply and the atmospheric conditions, yet none of these were unique to the incident aircraft that day. My logical mind still has trouble with this explanation.
Does anyone know why this phenomena has occurred only once in one 777 and only in one aircraft fueled from the same source that day? The conditions listed in the finding have all been repeated without incident many, many times. I would expect an inherent design weakness issue to reoccur at least transiently. One can call it a rare anomaly, except that here it happened in two autonomous engine fuel/oil heat exchangers at almost the same instant. All they had in common within the scope of this finding was the fuel system design, the fuel supply and the atmospheric conditions, yet none of these were unique to the incident aircraft that day. My logical mind still has trouble with this explanation.
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