Document ID: chunk:federal_register_of_legislation:F2009L03833:body:0:p1
Version: federal_register_of_legislation:F2009L03833
Segment Type: other
Provision Reference: 
Character Range: 0–3081

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.

                   Replacement of MR blades does not constitute terminating action for the repetitive inspection requirements of this AD, except when all MR blades installed on a helicopter are MR blades that have a P/N not listed in ECD
                   ASB-MBB-BK117-10-108.  In that case, this AD no longer applies to that helicopter.

                Note:  EASA AD 2009-0199, dated 08 September 2009 refers.
Compliance:          1. a. For MR Blades with less than 1800 FH time since new:

                     Within 300 FH after the effective date of this AD but not later than upon the accumulation of 1800 FH of the MR blade, whichever occurs first.  Inspect thereafter at intervals not to exceed 300 FH.

                  b. For MR Blades with more than 1800 FH time since new:

                  Within 300 FH after the effective date of this AD, or within 300 FH since the last required inspection. Inspect thereafter at intervals not to exceed 300