2022-08304: Airworthiness Directives; Leonardo S.p.a. Helicopters
Public comment closed .
Get alerted when the next rule lands
New rules open for comment on their own schedule. Pick how you want to hear about them — we email you when one appears.
Publishing to members? Embed a live rule tracker on your own site — the proposed rules in your area and the comment deadlines closing on them, updating themselves. Free, one line of HTML.
Create a free account & build one →Summary
The FAA proposes to supersede Airworthiness Directive (AD) 2021-20-10, which applies to certain Leonardo S.p.a. Model AB139 and AW139 helicopters. AD 2021-20-10 requires removing from service a certain part-numbered main gearbox (MGB) spherical bearing lock nut (lock nut) that is installed on certain part-numbered MGBs and replacing it with a newly designed MGB lock nut. AD 2021-20-10 also prohibits installing any MGB with the affected MGB lock nut and prohibits installing any affected MGB lock nut on any helicopter. Since the FAA issued AD 2021-20-10, it was discovered that a part number (P/ N) was incorrectly listed and that the applicability needed to be clarified. This proposed AD would retain the requirements of AD 2021- 20-10 and would clarify the applicability. The FAA is proposing this AD to address the unsafe condition on these products.
The agency’s own summary, as published.
What this changes
Amends 1 part of the Code of Federal Regulations — the standing rules this notice rewrites.
Rulemaking docket
We haven’t pulled this rulemaking’s full docket yet. View docket FAA-2022-0465 on Regulations.gov →
Don't miss the comment window
One Click Politics alerts you on every deadline, hearing, and rule change.
See all rules with comments due soon →