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AD/GBK 117/15 - Main Rotor Blades with Bolted Lead Inner Weights
Eurocopter BK 117 Series HelicoptersEurocopter BK 117 Series Helicopters
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Eurocopter BK 117 Series Helicopters
| AD/GBK 117/15 | Main Rotor Blades with BoltedLead Inner Weights | 6/2005 DM |
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| Applicability: | Models BK117 A-1 through C-1, all serial numbers. |
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| Requirement: | Action in accordance with Eurocopter Deutschland Alert Service Bulletin No. ASB-MBB-BK117-10-125, dated 14 February 2005, or later EASA approved revision.Note: LBA AD D-2005-115 refers. |
| Compliance: | As specified in the Requirement document. Unless it has already been accomplished, the 4 week period for the log check begins on 20 April 2005. |
| This Airworthiness Directive becomes effective on 20 April 2005. | |
| Background: | The LBA received a report of severe vibrations in-flight on a BK117 helicopter. The pilot immediately performed a safe landing, and the initial inspection revealed a cracked-open main rotor blade trailing edge. A subsequent inspection by the manufacturer revealed that a part of a bolted lead inner weight had come loose. This Directive introduces a life limit for blades with bolted lead inner weights installed. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
14 April 2005