Cosy Relationships
Bear...going back to your theory of group think. It seems the FAA and the EASA rubber stamp each others work. The FAA relies on the data produced by RR because it has been approved by the EASA.
As TURBINE D asks
"Where do responsibilities rest, with the OEM, with Airbus, with the governmental regulatory agency? How was it handled? In my mind, this is where the breakdown occurred on the 900 and A-380".
and
"viability of businesses rode on a favorable outcome of the flight test and aircraft certification program"
No business had more to loose than Qantas. The SIA CEO has made noises last week wanting an answer from RR, he is a very patient man in my opinion.
I don't think the ATSB has the resources to nail down if this was a design fault in the T900 series itself but I do expect the ATSB to report, without any regard to the happy relationship the FAA has with EASA or RR or anybody else.
It could well be that RR cannot balance this T900 and the misbored pipe did it us a big favour.
As TURBINE D states:
"so how were technical problems with the engines handled by the regulatory agency during the aircraft certification phase? I will let this up to the individual's imagination, I have mine."
If the failure was due to a faulty oil pipe..then fine.
Shell Management
What oil do you recommend for the 180C mean temps in this T972?
Maybe you have an additive?