AD 2023-13-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model EC225LP | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
Restricted fuel flow to the left-hand (LH) engine due to twisting of the LH fuel supply hose, which could result in a decrease of LH engine power during acceleration to One Engine Inoperative power and subsequent reduced control of the helicopter.
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Required Actions
Visually inspect the LH fuel supply hose for twisting. If twisting is found, borescope inspect the entire length of the inside of the fuel supply hose. Depending on inspection results, reinstall or remove the fuel supply hose from service. Replace the affected LH fuel supply hose P/N 704A34416087 with the improved LH fuel supply hose P/N 704A34416101 using updated procedures and an improved adjusting tool. For helicopters modified with the improved LH fuel supply hose P/N 704A34416101 using previous procedures or if installation procedures cannot be determined, perform repetitive inspections for fuel leakage and tighten the junction nuts with the LH side engine removed. Tightening the junction nuts provides terminating action for repetitive fuel leakage inspections.
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Compliance Time
Within 110 hours time-in-service with the LH side engine removed for helicopters with LH fuel supply hose P/N 704A34416101 installed with previous instructions, by installation of AH modification 0728745 prior to initial delivery, or if the previously accomplished installation procedures cannot be determined.
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Affected Aircraft
Airbus Helicopters Model EC225LP helicopters with LH fuel supply hose part number (P/N) 704A34416087 installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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