AD 2012-19-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | France | Airworthiness Directives; Eurocopter France Helicopters |
Unsafe Condition
Cracks on the tail rotor hub (TRH) could lead to tail rotor jamming, resulting in reduced or loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the tail rotor hub (TRH) for cracks within 55 hours time in service (TIS). If a crack is found, remove the TRH from service. Repeat inspections at intervals not exceeding 55 hours TIS.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 55 hours time in service (TIS)
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter France Model EC 155B, EC155B1, SA-365N1, AS-365N2, and AS 365 N3 helicopters.
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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