AD 2014-05-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | Deutschland GmbH | Airworthiness Directives; Eurocopter Deutschland GmbH Helicopters |
Unsafe Condition
Tooth rupture in the main gearbox (MGB), which could result in failure of the MGB, loss of power to the main rotor, and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Analyze the MGB oil for indications of metal chips or pieces. Review the MGB log or equivalent record. Inspect certain teeth in the MGB after two chip indications.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the specified time frame (not fully stated in the provided text).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter Deutschland GmbH Model EC135P1, EC135P2, EC135P2+, EC135T1, EC135T2, and EC135T2+ helicopters with a main gearbox (MGB) part number 4649 010 003, 4649 010 005, 4649 010 006, 4649 010 006X, 4649 010 008, 4649 010 008X, 4649 001 007, 4649 010 010, or 4649 010 013 installed.
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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