AD 2018-23-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | SAS | Airworthiness Directives; Airbus SAS Airplanes |
Unsafe Condition
dual flight management system (FMS) resets with the loss of flight plan (F-PLN) data, which in the context of 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.
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Required Actions
revising the airplane flight manual (AFM) to prohibit required navigation performance-authorization required (RNP-AR) operations using flight management guidance envelope computer (FMGEC) standard P5H3, and modifying the FMS software of airplanes equipped with FMGEC standard P5H3.
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Compliance Time
Before further flight
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Affected Aircraft
All Airbus SAS Model A330-200, A330-200 Freighter, and A330-300 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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