Arcam AB fka AMAVF

[Tom Joad]

"GE also intends to expand the use of ALM-produced parts on the GE9X. Although the GEnx test engine at Peebles is only installed with the 3D-printed blades on the seventh stage of the low-pressure turbine, they will be used on the two final stages of the production model." -Flightglobal, January 29, 2015.

GE9X Engine Tests

That should clear up a thing or two about where EB produced blades will be installed, but does this mean that certification does not have location specific requirements for a part during testing? Note that they are using 3D printed blades on the 7th stage during testing but on the final 2 stages of the low pressure turbine area of the production model.

FAA certification for the GEnx 1B engine is on file at FCC as of April 12, 2011. TCDS NUMBER E00078NE is on file. Note that this is before they were producing and installing ALM parts for testing in their engines! I couldn't seem to share the link to the certification document which is a pdf file so if anyone, like me, is spending a little time doing FAA certification detective work this might help .