NTSB released investigative update regarding September 8, 2015 engine fire experienced by British Airways flight 2276, a Boeing 777, during takeoff at McCarran International Airport. Investigators disassembled and documented GE90 engine at GE facility in Evandale, OH. Examination revealed one portion of stage 8-10 spool in high-pressure compressor (HPC) section failed; fracture initiated in HPC stage 8 disk web. NTSB will continue metallurgical evaluations of disk and fracture features.