Airworthiness DirectiveEASA AD 2022-0087

Fuel — Engine Fuel Supply Hoses — Inspection / Modification / Re-tightening

Published: May 16, 2022
Effective: May 30, 2022
Deadline: May 30, 2022
Replaces: 2021-0156

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What to do

Operators must inspect affected fuel supply hoses within specified flight hours or months depending on helicopter group classification and replace affected parts with improved versions within 1,200 flight hours or 36 months. Additionally, re-tightening of junction nuts is required during the next installation or reinstallation of the left-hand engine or improved hose. Compliance with detailed instructions in the referenced Airbus Helicopters service bulletins is mandatory.

Summary

EASA Airworthiness Directive 2022-00087 is an airworthiness directive addressing Airbus Helicopters EC 225 LP models. It focuses on inspection, modification, and re-tightening requirements for the left-hand side engine fuel supply hoses, specifically part numbers 704A34416087 and the improved 704A34416101. The directive aims to prevent fuel flow restrictions caused by twisted hoses that could lead to engine power loss.

What changed

This directive supersedes EASA AD 2021-0156 and retains its requirements while adding instructions for re-tightening the junction nuts of the improved fuel supply hose part. It introduces the use of an improved adjusting tool and updated torque values for installation and maintenance. The directive also clarifies installation and inspection procedures for different helicopter groups and parts.

Why it matters

This directive is critical for maintaining safe engine performance on EC 225 LP helicopters by preventing power loss due to fuel hose issues. Operators and maintenance organizations must comply to avoid potential in-flight engine power reductions that could compromise helicopter control. The updated procedures and tools improve maintenance accuracy and reliability, reducing the risk of improper hose installation.

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