Airworthiness Directive · Amendment 39-21776 · Nose/tail landing gear attach section
Diamond Aircraft Industries GmbH Airplanes
This AD applies to Diamond Aircraft Industries GmbH Model DA 42, DA 42 NG, and DA 42 M-NG airplanes, all serial numbers, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all Diamond Aircraft Industries GmbH Model DA 42, DA 42 NG, and DA 42 M-NG airplanes. This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as failure of the nose landing gear (NLG) actuator attachment lever and detachment from the NLG leg. This AD requires repetitively inspecting the NLG actuator attachment lever for cracks and damage and taking any necessary corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.
For the purposes of this AD, an airworthy part is an NLG leg assembly that has accumulated 1,800 or fewer hours time-in-service (TIS) since first installation on an airplane or that has passed the inspection (no cracks and no damage) required by paragraph (h)(1) of this AD.
(1) Inspect the NLG actuator attachment lever for cracks and damage in the areas shown in paragraph 2 of the Instructions in Diamond Aircraft Work Instruction WI-MSB 42-136 and WI-MSB 42NG-078, Revision 1, dated January 24, 2019 (issued as one document) attached to Diamond Aircraft Mandatory Service Bulletin MSB 42-136/1 and MSB 42NG-078, dated January 24, 2019 (issued as one document) at the following applicable compliance times in paragraph (h)(1)(i) or (ii) of this AD:
(i) For airplanes with an NLG assembly that has accumulated less than 1,800 hours TIS as of the effective date of this AD: Within 200 hours TIS after the NLG assembly accumulates 1,800 hours TIS or within 12 months after the NLG assembly accumulates 1,800 hours TIS, whichever occurs first, and thereafter at intervals not to exceed 200 hours TIS; or
(ii) For airplanes with an NLG assembly that has accumulated 1,800 or more hours TIS as of the effective date of this AD: Within 210 hours TIS after the effective date of this AD or within 12 months after the effective date of this AD, whichever occurs first, and thereafter at intervals not to exceed 200 hours TIS.
(2) After each inspection required by paragraph (h)(1) of this AD, if there is a crack or damage on the NLG actuator attachment lever, before further flight, replace the NLG leg assembly with an airworthy part as defined by this AD.
(3) As of the effective date of this AD, do not install an NLG leg assembly on any airplane unless it is an airworthy part as defined by this AD.
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
