Airworthiness Directive · Amendment 39-21864 · Aircraft fuel distribution system
Airbus Helicopters
Superseded. A later AD replaced this one: AD 2023-13-08. Comply with the one in force.
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.
The FAA is adopting a new airworthiness directive (AD) for certain Airbus Helicopters Model EC225LP helicopters. This AD requires various inspections of the left-hand side (LH) engine fuel supply (fuel supply) hose and depending on the inspection results, reinstalling the fuel supply hose or removing the fuel supply hose from service. Additionally, this AD requires installing an improved part and prohibits installing a certain part-numbered LH fuel supply hose on any helicopter unless it is installed by following certain procedures. This AD was prompted by a report of an incorrect installation of the LH fuel supply hose causing restricted fuel flow to the LH engine. The FAA is issuing this AD to address the unsafe condition on these products.
(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.
