Flight Controls — Flight Control Primary Computer — Modification / Replacement
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Airbus A340 aeroplanes must modify or replace the three FCPCs with the specified software standards within nine months from 2019-02-21. After modification, if the aircraft has approved AOA sensor configurations, the AFM Temporary Revision 529 can be removed. Installation of earlier software or hardware versions than those specified is prohibited after compliance or from the effective date for certain groups.
Summary
EASA Airworthiness Directive 2019-0028 is an airworthiness directive issued by the European Union Aviation Safety Agency affecting Airbus A340-211, A340-212, A340-213, A340-311, A340-312, A340-313, A340-541, A340-542, A340-642, and A340-643 aeroplanes equipped with certain Flight Control Primary Computer (FCPC) software standards. The directive mandates modification or replacement of the FCPC software to newer standards to enhance Angle of Attack (AOA) blockage detection. It also allows removal of a previously required operational procedure from the Aircraft Flight Manual once the modification is completed.
What changed
EASA Airworthiness Directive 2019-0028 introduces new FCPC software standards (L26, L25, W14) that improve detection of AOA blockages beyond previous software versions mandated by earlier directives. It requires operators to upgrade the FCPC software by modification or replacement within nine months of the effective date. Additionally, it permits removal of the AFM Temporary Revision 529 after compliance with the software upgrade and certain AOA sensor configurations.
Why it matters
This directive addresses safety concerns related to undetected AOA blockages that could lead to unintended Alpha protection activation and reduced aircraft control. For operators and maintenance organizations, compliance ensures continued airworthiness and operational safety of affected Airbus A340 models. It also streamlines operational procedures by removing the need for a previously mandated AFM temporary revision once upgrades are completed.
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