EASA AD 2025-0079
Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment
Summary
EASA Airworthiness Directive 2025-0079 is an amendment addressing the time limits and maintenance checks in the Airworthiness Limitations Section for SAFRAN HELICOPTER ENGINES ARRIEL 2 series engines, including models 2D, 2E, 2H, 2L2, and 2N. These engines are commonly installed on helicopters such as Airbus Helicopters AS 350 B3 (H125), EC 130 T2 (H130), MBB-BK117 D-2 (EC 145 T2 or H145), Korea Aerospace Industries LAH and LCH, and AVIC AC312E. The directive mandates compliance with updated maintenance tasks and life limits to ensure continued airworthiness.
What Changed
This AD supersedes EASA AD 2022-0083 and introduces new and/or more restrictive maintenance tasks and life limits specifically for the ARRIEL 2E engine model as published in the latest update of the applicable maintenance manual. Other ARRIEL 2 engine models have updated manuals but without new or more restrictive tasks. The directive requires operators to incorporate these updates into their maintenance programs within 12 months.
Why It Matters
Compliance with EASA Airworthiness Directive 2025-0079 is critical to maintaining the safety and airworthiness of helicopters powered by ARRIEL 2 series engines. Operators and maintenance organizations must follow the updated maintenance tasks and life limits to prevent unsafe conditions that could arise from overlooked or outdated procedures. This ensures regulatory compliance and reduces the risk of engine failures or incidents.
What To Do
Operators must replace components before exceeding their life limits and perform all maintenance tasks within specified intervals as outlined in the applicable Airworthiness Limitations Section. Any discrepancies found during maintenance must be corrected promptly according to SAFRAN-approved instructions. Additionally, the approved Aircraft Maintenance Programme must be revised to include these updated tasks and limitations within 12 months of the AD's effective date, which is 24 April 2025.