Summary
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Model EC 155B and EC155B1 helicopters. This AD was prompted by a report that non-destructive tests of the main gearbox (MGB) housing may have been evaluated incorrectly during production. This AD requires replacing affected MGBs with serviceable MGBs, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2020-0974
Document Number
2021-05089
Type
Rule
Publication Date
March 11, 2021
Effective Date
April 15, 2021
Affected Manufacturer
Airbus
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2020-0974
Topics
Official Documents
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