Flight Controls — Rudder Trim Tab Installation / Threaded Bolts — Replacement
- Published
- Effective
- Deadline
- Replaces
- 2023-0219-E
- Replaces
- 2024-0181
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Pilatus PC-24 aeroplanes with affected parts installed must replace the short rudder-trim control rod assemblies with serviceable parts within 300 flight hours after first installation or since the last replacement under AD 2023-0219-E, whichever is later. From the effective date, no affected parts may be installed on any aeroplane. Maintenance teams should follow Pilatus PC-24 Service Bulletin 27-010 for replacement instructions and reidentification of parts.
Summary
EASA Airworthiness Directive 2024-0181R1 is an updated regulatory requirement addressing the installation and replacement of rudder trim tab threaded bolts on Pilatus PC-24 aeroplanes, specifically those with manufacturer serial numbers 101 and above. The directive mandates replacing affected short rudder-trim control rod assemblies with serviceable parts to prevent potential failure of titanium bolts. This directive applies to the rudder trim tab installation and threaded bolts identified by specific part numbers.
What changed
EASA Airworthiness Directive 2024-0181R1 revises the previous AD 2024-0181 by clarifying the required replacement actions and modifying compliance times for affected rudder trim tab bolts. It updates the replacement instructions to ensure that titanium bolts, which may have fatigue issues, are replaced with steel bolts that have improved fatigue tolerance. The revision also prohibits the installation of affected parts on any aeroplane from the effective date.
Why it matters
This directive is critical for aviation professionals because failure of the titanium threaded bolts on the rudder trim tab control rods can lead to loss of rudder control, posing a significant safety risk. Operators and maintenance organizations must ensure compliance to maintain aircraft airworthiness and avoid potential control issues. The directive also impacts parts management by prohibiting the installation of affected components, requiring careful tracking and replacement of parts.
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