CANCELLED : Flight Controls — Trimmable Horizontal Stabilizer Actuator — Identification / Replacement
- Published
- Effective
- Deadline
- Replaces
- 2014-0257R1
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators and maintenance teams should continue to follow the requirements specified in EASA AD 2021-0250 and Airbus A330 Airworthiness Limitations Section Part 4 Revision 8 for THSA maintenance and replacement. No new actions or compliance deadlines arise from this cancellation notice. For technical questions, stakeholders should contact Airbus Airworthiness Office or EASA Safety Information Section.
Summary
EASA Airworthiness Directive Cancellation Notice 2014-0257-CN is a cancellation notice for the previous directive concerning the identification and replacement of the Trimmable Horizontal Stabilizer Actuator (THSA) on Airbus A330 and A340 aeroplanes. The affected aircraft models include various Airbus A330 and A340 variants with specific THSA part numbers 47147, 47172, and 47175. This cancellation reflects updated assessments and regulatory actions related to the THSA no-back brake efficiency issue.
What changed
This cancellation notice officially cancels EASA AD 2014-0257R1, which required replacement and maintenance actions on affected THSAs due to partial loss of no-back brake efficiency. The cancellation follows further regulatory updates, including EASA AD 2021-0250, which addresses the same safety concerns through revised airworthiness limitations. No new actions are mandated by this cancellation notice itself.
Why it matters
For aviation professionals, this cancellation clarifies that the previous AD 2014-0257R1 is no longer necessary as its requirements have been superseded by more recent directives and updated maintenance procedures. Operators and maintenance organizations can rely on the current airworthiness limitations and directives to ensure continued safety and compliance regarding the THSA components on Airbus A330 and A340 fleets. This reduces regulatory duplication and streamlines compliance efforts.
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