Eureka. EASA cannot allow averaged wear format any longer, and must revert to single case (5mm crest) strip. No one strips an engine and then does not replace parts on reassembly. The Parts? Every Spline has a sister, and that means both stub Shafts of IP and LP modules. If there is an upgrade in any thing pertinent to the AD, the FAA will get a smell, and that means everyone will know. Let's get further into the strip and r/r. All rotating mass will be affected by the resonant's dirty work, so who calls the replacement relative to time in service, wear gross clearances, and risk/benefit verse Capital outlay?? His is a very pivotal role. Bearings, Splines, Labyrinthines, Carbon residue in the FOHE, vent pipes, clean? replace? Will the Magnetic chip sensors tell a tale? Oil Pump (both) plus scavenge pumps, filters?? To get the eight modules apart, and then not rebuild sufficiently means doing it again with off wing and replace with new engine or park the Whale? How long? The numbers quoted as costs to Rolls are ridiculously low. Qantas will not pursue their suit (and give up those nuts in the vise??) Haste makes waste. IMO
Disclosure and honesty are the shortcut to healing all mistakes. The other way is exhaustive, expensive, and potentially lethal. Collective Pride.