Aircraft Flight Manual / Engine Bleed Air System — Amendment; Indicating & Recording System — Flight Warning Computer — Modification / Replacement
- Published
- Effective
- Deadline
- Replaces
- 2016-0226
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must amend the Aircraft Flight Manual within 30 days after 23 November 2016 to include AFM TR 746 Issue 1 if not already done. Within 24 months of 17 September 2018, they must upgrade or replace both Flight Warning Computers with software standard L14 or later. After modification, the temporary AFM procedure can be removed, and installation of older Flight Warning Computers is prohibited.
Summary
EASA Airworthiness Directive 2018-0192 is an amendment addressing the engine bleed air system and flight warning computer on Airbus A340-211, A340-212, A340-213, A340-311, A340-312, and A340-313 aeroplanes. It mandates modifications to the Flight Warning Computer software to prevent engine bleed valve malfunctions that could lead to over-temperature conditions. The directive also involves changes to the Aircraft Flight Manual to reflect updated operational procedures.
What changed
This directive supersedes EASA AD 2016-0226 and requires upgrading the Flight Warning Computers to software standard L14 or later, either by modification or replacement. It removes the need for the previously introduced temporary operational procedure AFM TR 746 Issue 1. Additionally, it prohibits installation of earlier Flight Warning Computer standards after the upgrade.
Why it matters
The directive addresses a critical safety issue where engine bleed valves could jam open during over-temperature events, risking damage to the bleed manifold and surrounding structures. Compliance ensures continued airworthiness and prevents potential structural integrity degradation. Operators and maintenance teams must update systems and manuals to maintain safe operation and regulatory compliance.
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