Main Rotor - Swashplate Assembly - Inspection / Removal
- Published
- Effective
- Deadline
- Replaces
- 2022-02-01
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Sikorsky S-92A helicopters with affected swashplate assemblies must perform recurring visual inspections every 50 flight hours and conduct eddy current or fluorescent penetrant inspections as specified. If cracks or damage are found, the swashplate assembly must be replaced promptly. Compliance with this AD is mandatory by June 29, 2023, the effective date of the directive.
Summary
Airworthiness Directive 2023-09-07 is a final rule issued by the Federal Aviation Administration affecting Sikorsky Aircraft Corporation Model S-92A helicopters equipped with main rotor stationary swashplate assemblies part numbers 92104-15011-042 and 92104-15011-043. This directive mandates inspections and potential removal of swashplate assemblies that have accumulated 1,600 or more total hours time-in-service to address cracks and other damage. The AD incorporates detailed recurring visual inspections and requires eddy current or fluorescent penetrant inspections to ensure continued airworthiness.
What changed
This AD supersedes AD 2022-02-01 by expanding the applicability to include all swashplate assemblies with the specified part numbers regardless of delivery date. It adds more detailed recurring visual inspections and requires either eddy current or fluorescent penetrant inspections based on flight hours or suspicion of cracks. The AD also clarifies inspection requirements and removes the obligation to return parts to Sikorsky, differing from previous service bulletins.
Why it matters
This directive is critical for aviation professionals as it addresses a known unsafe condition involving cracks in the swashplate assembly inner ring, which could compromise helicopter safety. Operators and maintenance organizations must implement the enhanced inspection regime to detect damage early and prevent potential failures. Compliance ensures continued airworthiness and regulatory adherence, avoiding operational disruptions and costly repairs.
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