AD 92-13-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 204B | Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 204B, 205A, 205A-1, 205B, 212, and 412 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 205A | Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 204B, 205A, 205A-1, 205B, 212, and 412 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 205A-1 | Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 204B, 205A, 205A-1, 205B, 212, and 412 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 205B | Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 204B, 205A, 205A-1, 205B, 212, and 412 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 212 | Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 204B, 205A, 205A-1, 205B, 212, and 412 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 412 | Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 204B, 205A, 205A-1, 205B, 212, and 412 Helicopters |
Unsafe Condition
Failure of the tail rotor driveshaft hanger bearing could result in failure of the tail rotor driveshaft and subsequent loss of tail rotor control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Determine the serial number of the tail rotor driveshaft hanger bearings part numbers 204-040-623-003 or 005. Replace bearings with specific serial numbers as outlined in the AD within 100 hours' time in service. Perform daily inspections for grease leakage, security, damage, overheat, and bearing binding until replacement is completed.
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Compliance Time
Before further flight and within the next 100 hours' time in service after the effective date of this AD.
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Affected Aircraft
Bell Helicopter Textron, Inc. Model 204B, 205A, 205A-1, 205B, 212, and 412 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 8, 2026
Rights: U.S. Government Public Domain
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