AD 2013-16-20
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | Deutschland GmbH (ECD) | Airworthiness Directives; Eurocopter Deutschland GmbH (ECD) Helicopters |
Unsafe Condition
Movement of the longitudinal main rotor actuator piston after shut-down of the external pump drive, during rigging of the main rotor controls, causing an incorrect rigging result.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the rigging of the power-boosted control system, referencing Figure 1 of Eurocopter Alert Service Bulletin ASB MBB BK117 C-2-67A-012, Revision 0. Insert rigging wedges with specific markings in the guide grooves of the rigging device. If there is a nonparallel gap between the rigging wedges and the inner sleeves, perform a rigging procedure.
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Compliance Time
Within 300 hours time-in-service
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Affected Aircraft
Eurocopter Deutschland GmbH (ECD) Model MBB-BK 117 C-2 helicopters, certificated in any category.
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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