Federal Register of Legislation
AIRWORTHINESS DIRECTIVE On the effective date specified below, and for the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) AD/GBK 117/6 Amdt 5 and issues the following AD under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.
Eurocopter BK 117 Series Helicopters AD/GBK 117/6 Amdt 6 Main Rotor Blade 12/2009
Applicability: Models MBB-BK117A-1, A-3, A-4, B-1, B-2, and C-1, all serial numbers, if equipped with MR Blades as identified by Part Number (P/N) in Eurocopter Deutschland GmbH Alert Service Bulletin (ASB) ASB-MBB-BK117-10-108 Revision 4 or later revision. Requirement: 1. Inspect the affected MR blades in accordance with the instructions contained in Eurocopter Deutschland GmbH Alert Service Bulletin (ASB) ASB-MBB-BK117-10-108 Revision 4 or later revision.
Inspections and corrective actions accomplished prior to the effective date of this AD, in accordance with ECD ASB-MBB-BK117-10-108 at original issue or Revision 1 or Revision 2 or Revision 3, are acceptable to comply with the initial requirements of paragraph (1) of this AD. After the effective date of this AD, repetitive inspections and corrective actions must be accomplished in accordance with ECD ASB-MBB-BK117-10-108 at Revision 4.
During any inspection required by this AD, if damage is detected that is outside the allowable limits as specified in Eurocopter Deutschland GmbH Alert Service Bulletin (ASB) ASB-MBB-BK117-10-108 Revision 4 or later revision, before further flight replace each affected blade with a serviceable blade.
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