AD 2020-15-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | Helicopters Deutschland GmbH | Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters |
Unsafe Condition
A design reassessment revealed stiffness of the hydraulic plate may be insufficient to withstand the in-service loads in the event one of the four single locking attachment points fails.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the four attachment points at intervals not exceeding 400 flight hours, or replace each single locking attachment point mechanism with a double locking attachment point mechanism within 300 hours TIS, inspect the clamping effect of the aft joints, torque tighten the bolts, and take corrective action if necessary for helicopters with a hydraulic module plate assembly with double locking attachment hardware installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 300 hours TIS
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Affected Aircraft
Airbus Helicopters Model MBB-BK 117 C-2 helicopters, serial numbers up to and including 9750, and Model MBB-BK 117 D-2 helicopters, serial numbers up to and including 20110, with a hydraulic module plate assembly part number B291M0003103 with a single locking attachment point installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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