airworthiness · Rule · Final rule; request for comments. · Published 2021-08-20 · Effective 2021-09-07 · 86 FR 46762
Document
Document number
2021-17974
Federal Register citation
86 FR 46762
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Leonardo S.p.a
Publication date
2021-08-20
Effective date
2021-09-07
FAA docket
Docket No. FAA-2021-0672
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Leonardo S.p.a. Model A109A, A109A II, A109C, A109E, A109K2, A109S, and AW109SP helicopters, having a certain rotor brake kit installed. This AD was prompted by a report of un-commanded activation of the rotor brake system before take-off due to a jammed rotor brake control cable and subsequent partially open brake control valve. This AD requires repetitive inspections of the rotor brake control cable and replacement of the rotor brake control cable, if necessary, 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.