AD 2023-25-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model EC130T2 | Airworthiness Directives; Airbus Helicopters |
| aircraft | Aviat | Various | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
Excessive vibration level on the tail rotor drive shaft, which could result in failure of the tail rotor drive shaft and subsequent loss of yaw control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Repetitively inspect the balancing of the tail rotor drive shaft by measuring the vibration level. Depending on the results, replace certain parts with new parts. Prohibit performing a balance correction unless it is performed concurrently with replacing certain parts. If a balance correction has already been performed independently, contact Airbus Helicopters for further approved instructions. Report vibration measurements to Airbus Helicopters. Prohibit installing certain part-numbered tail rotor drive shafts unless requirements are met.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of this AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Airbus Helicopters Model EC130T2 helicopters with modification 079809 incorporated in production.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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