Turbine Interstage Seals 

Some talking, some diagrams, and some real parts to help understand the recent turbine failure of a GE90-115B, and the FAA's emergency airworthiness directive in response to the incident.
blancolirio's channel : • Boeing 777 -300ER Emer...
Here is the full text of the FAA's directive:rgl.faa.gov/Reg...