EASA Regulations for Diamond Aircraft Industries DA 40 NG

EASA AD 2024-0172-E

Engine — Piston — Inspection / Replacement

EASA Airworthiness Directive 2024-0172-E is an emergency directive addressing piston engines E4 and E4P manufactured by Austro Engine GmbH and Wuhu Diamond Aeroengine Co. Ltd., commonly installed on Diamond Aircraft Industries models DA 40 NG, DA 42 NG, DA 42 M-NG, and DA 62. The directive mandates repetitive borescope inspections and replacement of affected pistons with part number E4A-72-400-000 due to reported piston cracks that could lead to engine failure.