EASA 2020-0151-E (Emergency)

Requires replacement of certain high-pressure turbine discs with serviceable parts and prohibits reinstallation of affected parts. Prompted by positive segregation (freckles) detected on Stage 2 high-pressure turbine discs manufactured from a certain block of material. If not corrected, this condition could lead to high-pressure turbine disc failure and result in high-energy debris release, with consequent damage to and reduced control of the helicopter.