EASA Regulations for CFM International CFM56-5B

EASA AD 2026-0033

Engine — High-Pressure Turbine Inner Stationary Seal — Inspection

EASA Airworthiness Directive 2026-0033 is issued for CFM International CFM56-5B, CFM56-5C, and CFM56-7B engines installed on aircraft including Airbus A318, A319, A320, A321, A340 and Boeing 737-600 through 737-900ER series. The directive mandates inspections of the high-pressure turbine inner stationary seal and the rotating air high-pressure turbine front seal to detect cracks or honeycomb separation. It addresses potential risks of seal failure that could lead to uncontained engine damage and possible harm to the aircraft.