Airworthiness directives › 2018-23-08
AD 2018-23-08 Airworthiness Directives; Airbus SAS Airplanes
Applicability*9
This AD applies to Airbus SAS Model A330-201, A330-202, A330-203, A330-223, A330-223F, A330-243, A330-243F, A330-301, A330-302, A330-303, A330-321, A330-322, A330-323, A330-341, A330-342, and A330-343 airplanes, certificated in any category, all manufacturer serial numbers.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For the purposes of this AD, the definitions in paragraphs (g)(1) through (g)(3) of this AD apply. (1) Group 1 airplanes are those that have flight management guidance envelope computer (FMGEC) standard P5H3 (Airbus SAS Modification 204758 Part Number (P/N) FMGEC C13226HA07 with P/N FMS operational SW PS4087700-906) embodied in production, or embodied in service as specified in Airbus Service Bulletin A330-22-3209; Airbus Service Bulletin A330-22-3225; Airbus Service Bulletin A330-22-3244; Airbus Service Bulletin A330-22-3247; or Airbus Service Bulletin A330-22-3262; except those that have RNP-AR. (2) Group 2 airplanes have the same configuration as those in Group 1, but in addition have RNP-AR (Airbus SAS Modification 203441, or Airbus SAS Modification 203442, or Airbus SAS Modification 200624) embodied in production or Airbus Service Bulletin A330-34-3262; Airbus Service Bulletin A330-34- 3308; or Airbus Service Bulletin A330-34-3345; embodied in service. (3) Group 3 airplanes are those in any configuration other than that identified in paragraph (g)(1) or (g)(2) of this AD.
Unsafe condition
This AD was prompted by reports of dual flight management system (FMS) resets with the loss of flight plan (F-PLN) data. We are issuing this AD to address dual FMS reset and loss of F-PLN data, which in the context of required navigation performance-authorization required (RNP-AR) operations of the airplane could result in significantly reduced situational awareness of proximity to terrain and/or other aircraft to below acceptable safety margins, and out of the context of RNP-AR operations could lead to an unusually high pilot workload.
Affected ADs
None.
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