Tail Rotor Drive – Shaft-Line – Check / Measurement
Superseded. Comply with 2024-0144, which replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2022-0251-E
- Replaces
- 2023-0190-E
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected EC 130 T2 helicopters must perform vibration level measurements of the tail rotor drive shaft within specified compliance times and repeat every 50 flight hours. If vibration exceeds defined limits, parts must be removed and replaced following Airbus Helicopters instructions. Balance corrections are prohibited except during part replacements, and all measurement results must be reported to Airbus Helicopters within 30 days.
Summary
EASA Airworthiness Directive 2023-0190R1 is an updated safety directive addressing Airbus Helicopters EC 130 T2 models equipped with specific tail rotor drive shafts (P/N 350A34-5010-00 or 3S50A34-5020-00). It mandates repetitive vibration level measurements of the tail rotor drive shaft to detect potential cracks or failures that could lead to loss of yaw control. The directive includes detailed inspection procedures and corrective actions to maintain airworthiness.
What changed
This revision updates the previous AD 2023-0190-E by incorporating relaxed criteria for part installation and allowing certain spline sleeve equipped and sliding flange parts under specified conditions. It also adjusts vibration measurement thresholds due to tool discrepancies and prohibits balance corrections except during part replacements. Additionally, it includes new instructions from Airbus Helicopters Emergency Alert Service Bulletin EC130-05A042 Revision 2.
Why it matters
This AD is critical for operators and maintenance organizations to prevent tail rotor drive shaft failures that could compromise helicopter control and safety. Compliance ensures early detection of vibration issues, reducing the risk of in-flight emergencies. It also clarifies maintenance procedures and reporting requirements, aiding regulatory compliance and safe operation of EC 130 T2 helicopters.
More for Airbus Helicopters AS 350
All 99- EASA AD 2025-0159R1Placards and Markings – Unlock Sliding Door – InstallationOct 19, 2026
- EASA AD 2026-0052R2Instruments – Fuse Cover Attachment of Circuit Breaker Panel – ModificationSep 24, 2026
- EASA AD 2023-0214R1Fuselage – Tail Rotor Drive Shaft / Rear Transmission Bearing Support – Inspections / ModificationSep 16, 2026
- EASA AD 2024-0144R1Tail Rotor Drive – Shaft-Line – Check / Measurement / ModificationSep 16, 2026
- EASA AD 2026-0146
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