Summary
The FAA is adopting a new airworthiness directive (AD) for certain Sikorsky Aircraft Corporation (Sikorsky) Model S-70, S-70A, S- 70C, S-70C(M), and S-70C(M1) helicopters. This AD was prompted by four incidents of disbonding between the tail rotor (T/R) blade pitch horn and the torque tube. This AD requires recurring visual and tap inspections of the T/R blade, and depending on the outcome, replacing the T/R blade. The FAA is issuing this AD to address the unsafe condition on these products.
Directive Details
AD Number
FAA-2019-0663
Document Number
2020-02446
Type
Rule
Publication Date
February 7, 2020
Effective Date
March 13, 2020
Affected Manufacturer
Sikorsky Aircraft Corporation
Criticality
routine
Emergency
No
Docket ID
Docket No. FAA-2019-0663
Topics
Official Documents
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