AD 70-06-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 204B | Airworthiness Directives; Bell Model 204B 205A and 205A-1 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 205A | Airworthiness Directives; Bell Model 204B 205A and 205A-1 Helicopters |
| aircraft | Bell Helicopter Textron, Inc. | 205A-1 | Airworthiness Directives; Bell Model 204B 205A and 205A-1 Helicopters |
Unsafe Condition
Failure of the grip assemblies, P/N 204-011-728 or P/N 204-011-706, due to improper hardness or conductivity below Rockwell 79 on the 'B' scale or above conductivity of 39 on International Annealed Copper Standard.
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Required Actions
Inspect all tail rotor grip assemblies for proper hardness or conductivity using Rockwell Hardness, Eddy Current Tester, or Magnatest FM-120 before further flight. Remove grip assemblies with readings below Rockwell 79 or above 39 conductivity. Inspect spare assemblies before installation.
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Compliance Time
before further flight
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Affected Aircraft
Bell Model 204B, 205A, and 205A-1 helicopters with tail rotor hub assemblies P/N 204-011-801-5 or -7, P/N 204-011-701-11, -13, or -19, and spare tail rotor hub assemblies P/N 205-011-801-5 or -7, P/N 204-011-701-11, -13, or -19.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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