Airworthiness directives › 2021-22-25
AD 2021-22-25 Airworthiness Directives; Airbus SAS Airplanes
Models named: A330-201, -202, -203, -223, -243, A330-223F, -243F, A330-301, -302, -303. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Airbus SAS airplanes specified in paragraphs (c)(1) through (8) of this AD, certificated in any category. (1) Model A330-201, -202, -203, -223, and -243 airplanes. (2) Model A330-223F and -243F airplanes. (3) Model A330-301, -302, -303, -321, -322, -323, -341, -342, and -343 airplanes. (4) Model A330-941 airplanes. (5) Model A340-211, -212, and -213 airplanes. (6) Model A340-311, -312, and -313 airplanes. (7) Model A340-541 airplanes. (8) Model A340-642 airplanes.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, European Union Aviation Safety Agency (EASA) AD 2021-0103, dated April 13, 2021 (EASA AD 2021-0103).
Unsafe condition
This AD was prompted by a report that during the frame of flight test clearance process, a detailed analysis of air data reference (ADR) failure scenarios led to the identification that compliance requirements for loads and handling qualities throughout the flight envelope could be impaired in case of dispatch with one ADR inoperative (master minimum equipment list (MMEL) item 34-10-01) during the maximum interval allowed by the current MMEL. The FAA is issuing this AD to address the possibility of in-flight loss of a second ADR combined with erroneous low speed data provided by the remaining functional ADR, which could result in loss of control of the airplane.
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