CTHIn ForceLegislation
AD/BELL 206/153 Amdt 3 - Tail Rotor Blade Trailing Edge Skin Cracks
Bell Helicopter Textron Canada (BHTC) 20Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters
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Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters
| AD/BELL 206/153 Amdt 3 | Tail Rotor Blade TrailingEdge Skin Cracks | 11/2005 |
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| Applicability: | Model 206A and 206B helicopters, equipped with tail rotor blade, part numbers206-016-201-131 or 206-016-201-133, and Model 206L series helicopters equipped with tail rotor blade, part number 206-016-201-131; with serial numbers identified in Model 206A and 206B Alert Service Bulletin (ASB) 206-04-100, Revision C or a later Transport Canada approved revision, or Model 206L Series ASB 206L-04-127, Revision C or a later Transport Canada approved revision, as applicable.Agusta-Bell Model AB206A/B helicopters, equipped with tail rotor blades, part numbers 206-016-201-131 or 206-016-201-133; with serial numbers identified in Model AB206A/B Alert Bolletino Technico (ABT) 206-237. |
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| Requirement: | Part A: Identification of Affected Tail Rotor Blades1. Verify if the rotorcraft is equipped with tail rotor blades identified in the “Component Affected” or “Helicopters Affected” section of the applicable ASB or ABT, listed in the Applicability part of this Directive. If the rotorcraft is equipped with an affected blade, enter the part number and serial number into the journey logbook. If not equipped with an affected blade, indicate that the rotorcraft is not equipped with blades affected by this Directive.2. If any spare blade is listed in the “Component Affected” or “Helicopters Affected” section of the applicable ASB or ABT, the blade is to be identified with a “Blue Diamond” decal as per Part II, of the applicable ASB or ABT.Part B: Initial and Recurring Check for Tail Rotor Blade CracksCheck the affected tail rotor blade for cracking in accordance with the instructions in Part I of the applicable ASB or ABT listed in the Applicability part of this Directive. If a crack is found, before further flight, replace the affected blade.Part C: Schedule 100 hour / Annual Inspection For Tail Rotor Blade CracksPerform a detail visual inspection of the tail rotor blade using a magnifying glass, in accordance with Part II of the applicable ASB or ABT listed in the Applicability part of this Directive. If a crack is found, before further flight, replace the affected blade. |
| Part D: Terminating Inspection for Bell Helicopter Textron tail rotor bladesSend the affected tail rotor blades to the repair facility identified in Part III of the applicable ASB listed in the Applicability part of this Directive. Tail rotor blades found with unacceptable blade skin thickness are to be removed from service.Part E: New Skin Damage Limits for Bell Helicopter Textron tail rotor bladesInspect the tail rotor blades in accordance with Part IV of ASB 206-04-100 Revision C or ASB 206L-04-127 Revision C, or later Transport Canada approved revisions, as applicable.Part F: One-Time Inspections for Bell Helicopter Textron tail rotor bladesInspect the maintenance records of the affected blades to determine if the blades had been previously repaired following the inspection required by the previous issues of this Directive. If it has been repaired, contact the repair organisation to determine if the weight of the trailing edge root weight package had changed. If the weight package was increased, the tail rotor blade is to be sent for rebalancing in accordance with Part III of ASB 206-04-100 Revision C or ASB 206L-04-127 Revision C, or later Transport Canada approved revisions, as applicable.Note: Transport Canada AD CF-2004-05R2 refers. |