Airworthiness Directive · Amendment 39-21918 · Fuel storage
Diamond Aircraft Industries GmbH Airplanes
This AD applies to:
(1) Diamond Aircraft Industries GmbH (DAI) Model DA 42 NG airplanes, serial numbers (S/N) 42.N303 through 42.N314, 42.N319, and 42.N320, certificated in any category, with a fuel tank connection hose part number (P/N) D4D-2817-10-70 installed; and
(2) DAI Models DA 42, DA 42 NG, and DA 42 M-NG airplanes, all serial numbers, certificated in any category, with a fuel tank connection hose P/N D4D-2817-10-70 identified in the Technical Details, section I.11, of Diamond Aircraft Mandatory Service Bulletin MSB 42-138/MSB 42NG-080, dated July 1, 2019 (issued as one document) (Diamond MSB 42-138/42NG-080), installed.
The FAA is adopting a new airworthiness directive (AD) for certain Diamond Aircraft Industries GmbH (DAI) Model DA 42, DA 42 M-NG, and DA 42 NG airplanes. This AD was prompted by mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as dissolved or detached fuel tank hose material entering the main fuel tank chambers, which could result in restricted fuel flow with consequent fuel starvation. This AD requires removing the fuel tank connection hoses from service and inspecting the fuel tank connection hoses for damage and detached rubber material. The FAA is issuing this AD to address the unsafe condition on these products.
(1) Within 100 hours time-in-service (TIS) after the effective date of this AD or within 4 months after the effective date of this AD, whichever occurs first, replace the main fuel tank connection hoses in accordance with the Instructions, sections III.1 and III.2, in DAI Work Instruction WI-MSB 42-138/WI-MSB 42NG-080, Revision 0, dated July 1, 2019, (issued as one document) attached to Diamond MSB 42-138/42NG-080. Instead of P/N D4D-2817-10-70_01, you may also replace a fuel tank connection hose with P/N D4D-2817-10-70 that is not identified in paragraph (c) of this AD.
(2) As of the effective date of this AD, do not install a fuel tank connection hose P/N D4D-2817-10-70 identified in paragraph (c) of this AD on any airplane.
This AD does not require you to report information as specified in the Instructions, step III.1.12, in DAI Work Instruction WI-MSB 42-138/WI-MSB 42NG-080, Revision 0, dated July 1, 2019, (issued as one document) attached to Diamond MSB 42-138/42NG-080.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
