AD 2020-12-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Model EC120B | Airworthiness Directives; Airbus Helicopters |
Unsafe Condition
A changed manufacturing process for the tail rotor blades (TRB) was implemented, affecting the structural characteristics of the TRB and generating a new part number for these blades.
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Required Actions
Re-identify each affected TRB having a certain part number and serial number and establish a life limit for the new part numbers. Prohibit installation of any affected TRB identified with the old part number on any helicopter. Remove from service each TRB having P/N C642A0300104 or P/N C642A0300105 before exceeding 8,500 hours time-in-service (TIS) since first installation on a helicopter. Re-identify each affected part in accordance with the procedures specified in Airbus Helicopters Alert Service Bulletin EC120-04A008, Revision 0, dated July 18, 2018.
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Compliance Time
Within 1,000 hours TIS after the effective date of this AD
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Affected Aircraft
All Airbus Helicopters Model EC120B helicopters, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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