S3/2012 - EC225 LP Super Puma G-REDW
This Special Bulletin details the progress made in identifying the failure mechanism that caused the 360° circumferential crack, in the bevel gear vertical shaft in the helicopter’s main gearbox, which was identified in the early stages of the investigation and published in AAIB Special Bulletin 2/2012 in May 2012. It also details progress on the investigation into the indicated failure of the main gearbox emergency lubrication system.
AAIB S3-2012 G-REDW.pdf (1,202.18 kb)
Published 10 December 2014