Airworthiness directives › 2021-05-03
AD 2021-05-03 Airworthiness Directives; Airbus Helicopters
Models named: EC225LP. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Airbus Helicopters Model EC225LP helicopters, certificated in any category, with a left-hand side (LH) engine fuel supply (fuel supply) hose part number (P/N) 704A34416087 installed.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within 110 hours time-in-service (TIS) after the effective date of this AD, visually inspect the LH fuel supply hose for twisting as shown in Figures 1 and 2 of Airbus Helicopters Alert Service Bulletin No. EC225-71A019, Revision 2, dated May 21, 2021 (ASB EC225-71A019 Rev 2). If the LH fuel supply hose has any twisting, before further flight, borescope inspect the entire length of the inside of the fuel supply hose for twisting as shown in Figures 3 through 5 of ASB EC225-71A019 Rev 2. (i) If the inside of the LH fuel supply hose has any twisting, before further flight, remove the LH fuel supply hose from service and install an airworthy LH fuel supply hose by following the Accomplishment Instructions, paragraph 3.B.3.b, of ASB EC225-71A019 Rev 2. (ii) If the LH fuel supply hose does not have any twisting, reinstall the LH fuel supply hose by following the Accomplishment Instructions, paragraph 3.B.3.b, of ASB EC225-71A019 Rev 2. (2) Within 1,200 hours TIS after the effective date of this AD, modify your helicopter by removing from service LH fuel supply hose P/N 704A34416087 and installing the improved LH fuel supply hose P/N 704A34416101 in accordance with the Accomplishment Instructions, paragraph 3.B.3.b, of ASB EC225-71A019 Rev 2. (3) As of the effective date of this AD, do not install a LH fuel supply hose P/N 704A34416087 on any helicopter unless it is installed by following the Accomplishment Instructions, paragraph 3.B.3.b, of ASB EC225-71A019 Rev 2.
Unsafe condition
This AD was prompted by a report of an incorrect installation of the LH fuel supply hose P/N 704A34416087. The FAA is issuing this AD to prevent restricted fuel flow to the LH engine. The unsafe condition, if not addressed, could result in a decrease of the LH engine power when accelerating to a power setting corresponding to One Engine Inoperative power and subsequent reduced control of the helicopter.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1