Airworthiness directives › 2021-14-02
AD 2021-14-02 Airworthiness Directives; Aircraft Industries a.s. Airplanes
Models named: L-420, L 410 UVP-E20, L 410 UVP-E20 CARGO. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Aircraft Industries a.s. Models L-420, L 410 UVP-E20, and L 410 UVP-E20 CARGO airplanes, all serial numbers, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within 30 days after the effective date of this AD, inspect the NLG to determine if vertical pin part number (P/N) L3 223 016 with retaining bolt is installed on the NLG steering lever assembly. If vertical pin P/N L3 223 016 is installed, before further flight, replace the vertical pin with vertical pin P/N L3 223 316 by following sections B. and C. of the Instruction for Implementation in LET Aircraft Industries Mandatory Bulletin SB No. L-420/021a, Revision 1, dated October 29, 2019; or LET Aircraft Industries Mandatory Bulletin SB No. L410UVP-E/144a, Revision 1, dated October 29, 2019, as applicable to your airplane model. (2) As of the effective date of this AD, do not install a vertical pin P/N L3 223 016 in the NLG steering lever assembly on any airplane.
Unsafe condition
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 cracking of the retaining bolt on the nose landing gear (NLG) control. The FAA is issuing this AD to prevent loss of the NLG vertical pin, which, if not addressed, could result in reduced airplane control during taxing, takeoff, and landing.
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