AD 2013-05-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; Bell Helicopter Textron, Inc. |
| aircraft | Bell | Helicopter Textron | Airworthiness Directives; Bell Helicopter Textron, Inc. |
Unsafe Condition
Cracking in the swashplate outer ring assembly (outer ring), part number 412-010-407-105, which could result in the loss of main rotor blade pitch control and subsequent loss of helicopter control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Establish a retirement life of 2,500 hours time-in-service (TIS) for affected outer rings on the component history card or equivalent record. Revise the helicopter Airworthiness Limitations section of the applicable maintenance manual or Instructions for Continued Airworthiness (ICA) by establishing the new retirement life. Replace outer rings with airworthy ones based on TIS: within 300 hours TIS for those with 2,200 or more hours TIS, and within 12 months for all affected outer rings. Do not install outer ring, P/N 412-010-407-105, on any helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days for establishing the retirement life and revising the maintenance manual or ICA. Within 300 hours TIS for outer rings with 2,200 or more hours TIS. Within 12 months for all affected outer rings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Bell Helicopter Textron, Inc., Model 412 and 412EP helicopters, with a swashplate outer ring assembly (outer ring), part number 412-010-407-105, 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 6, 2026
Rights: U.S. Government Public Domain
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