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Leonardo Alert Service Bulletin 139-609

Service bulletin · Leonardo

Revision ALeonardo Helicopters ASB 139-609 Rev A · 29 pages · 6.1 MB

© Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2021-0579; AD 2021-20-10 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

Docket FAA-2021-0579 (document 0004) · AD 2021-20-10

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Manufacturer: Leonardo
Type: Alert Service Bulletin
Number: 139-609
Latest revision known: 139-609, Revision A, dated April 13, 2021

A newer revision may exist than any OpenAirDocs knows of: check with the manufacturer.

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ADs that cite it · 2

Newest first, with the revision each names, as OpenAirDocs read it from the AD’s text: check it against the AD.

AD 2022-27-03Main Rotor Gearbox · Leonardo AB139 and AW139Effective Jan 31, 2023 · Revision A AD 2021-20-10Main Rotor Gearbox · Leonardo AB139 and AW139Effective Nov 22, 2021 · Revision A

Also cited in 2 proposed ADs.