Alex
What are the chances of the RR Trent fleet being grounded? (G-YMMA to G-YMMO)
RR put out, I believe, a statement to clarify the engines had not (necessarily) "failed", just "failed to respond".
The system will be complex, no doubt more so than even the Flt Crew manuals will say. The TLs will be manufactured by Boeing, and the fuel injectors by RR. Between these 2 points will be numerous mechanical components, electrical boxes and wires, and fuel componenets. Some will be Boeing sourced, and common to all 777s, and some will be RR sourced.
The AAIB said as much
The investigation is now focussed on more detailed analysis of the Flight Recorder information, collecting further recorded information from various system modules and examining the range of aircraft systems that could influence engine operation.
and without further info, one does not know if this is a RR 777 problem, a 777 problem or even lots of types
