AD 2012-13-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Eurocopter | Deutschland GmbH | Airworthiness Directives; Eurocopter Deutschland GmbH Helicopters |
Unsafe Condition
Improper swaging of the tail rotor pitch link spherical bearing, which may migrate out of the bearing bore.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the pitch link from the helicopter and clean the spherical bearings. Apply hand pressure to the bearing faces and inspect with an 8X or higher power magnifying glass for complete swaging of the bearing bore. If the pitch link has not been completely swaged, remove the pitch link and replace it with an airworthy pitch link.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Eurocopter Deutschland GmbH Model MBB-BK 117 (all versions) and BO-105LS A-3 helicopters with tail rotor pitch link part numbers 117-31821, 117-31822, or B642M1.
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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