Airworthiness directives › 2023-19-04
AD 2023-19-04 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. Model 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
The following definitions apply to this AD: (1) An “affected part” is an MLG wheel brake unit part number (P/N) K38-1200-7 having serial number XXX-35, XXX-36, XXX-37, or XXX-38, where X represents any numerical value and where the MLG wheel brake unit has not been modified using sections B. and C. of the Implementation Information in LET Aircraft Industries Service Bulletin L-410/039a, Revision 1, dated October 25, 2022 (LET SB L-410/039a, Revision 1). (2) A “serviceable part” is an MLG wheel brake unit that is not P/N K38-1200-7 having serial number XXX-35, XXX-36, XXX-37, or XXX-38, where X represents any numerical value or where the MLG wheel brake unit P/N K38-1200-7 having serial number XXX-35, XXX-36, XXX-37, or XXX-38 has been modified using sections B. and C. of the Implementation Information in LET SB L-410/039a, Revision 1.
Unsafe condition
This AD was prompted by reports of the pressure plates within the main landing gear (MLG) wheel brake unit malfunctioning. The FAA is issuing this AD to address MLG wheel brake failures. The unsafe condition, if not addressed, could result in reduced brake function, resulting in loss of control of the airplane, especially during taxiing, aborted take-off, or 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