EASA AD 2025-0020R1
Engine — Combustion Rear Inner Case Bolt — Replacement / Modification
EASA Airworthiness Directive 2025-0020R1 is an updated directive addressing the replacement and modification of combustion rear inner case (CRIC) bolts, Part Number FW82729, on Rolls-Royce RB211 Trent 900 series engines. These engines are commonly installed on Airbus A380 aircraft. The directive mandates repetitive replacement of affected bolts during qualified shop visits and requires a modification of the engine to install an improved CRIC assembly to prevent bolt fractures.