Summary
We are superseding Airworthiness Directive (AD) 97-26-03 for Eurocopter Deutschland GmbH Model MBB-BK 117 A-1, MBB-BK 117 A-3, MBB- BK 117 A-4, MBB-BK 117 B-1, MBB-BK 117 B-2, and MBB-BK 117 C-1 helicopters. AD 97-26-03 required visual inspections for cracks in the ribbed area of the main rotor (M/R) mast flange (flange). Since we issued AD 97-26-03, we have determined that a certain reinforced M/R mast is not affected by the unsafe condition. This new AD retains the requirements of AD 97-26-03 and removes a certain M/R mast from the applicability. The actions of this AD are intended to address an unsafe condition on these products.
Directive Details
AD Number
FAA-2017-1126
Document Number
2019-04530
Type
Rule
Publication Date
March 13, 2019
Effective Date
April 17, 2019
Affected Manufacturer
Airbus Helicopters Deutschland GmbH (Previously Eurocopter Deutschland GmbH)
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2017-1126
Topics
Official Documents
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