Airworthiness Directives (ADs)
CAA-2012-09-011
The aircraft owner or operator shall comply with Airworthiness Directives issued by the CAA or the aeronautics authority of the State of Design (SoD) of the aviation products, appliances and parts, and take all necessary actions thereto.
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Issue Date
- 2012/09/17
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Applicability
- This AD applies to restricted category Model HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E, UH-1F, UH-1H, UH-1L, and UH-1P helicopters with a main rotor (M/R) blade, part number (P/N) 204-012-001-023 or -033; 210-015-001-101; 212-015-501-005, -111, -113, -115, -117, -119, or -121, installed, certificated in any category.
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Model Number
- HH-1K, TH-1F, TH-1L, UH-1A, UH-1B, UH-1E,
UH-1F, UH-1H, UH-1L, and UH-1P helicopters
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CAA AD Number
- CAA-2012-09-011
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Aeronautics Authority of Original AD
- FAA
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Original AD Number
- 2012-17-10
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Effective Date
- 2012/09/28
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Subject
- This AD is prompted by several reports of fatigue cracks on M/R blades installed on Bell Helicopter Textron, Inc. (Bell) Model 212 helicopters. These same part-numbered M/R blades may also be installed on certain FAA-approved modified restricted category helicopters. These actions are intended to detect an edge void, corrosion, or a crack on an M/R blade, which could lead to loss of the M/R blade and subsequent loss of control of the helicopter.
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Reference Publications (Revision/ATA/SB)
- Ref.Bell Helicopter Alert Service Bulletin (ASB) No. 205B-08-51 Revision B, dated January 11, 2011, for Model 205B helicopters, ASB No. 210-08-03 Revision B, dated January 10, 2011 for the Model 210 helicopters, and ASB No. 212-08-130 Revision B, dated January 11, 2011
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Remarks
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