# Leonardo Alert Service Bulletin 139-593

Copy: Revision A ("Leonardo Helicopters Service Bulletin Alert 139-593 Rev A"), 12 pages: PDF https://openairdocs.org/files/sha256/2d/9c/2d9c5420dd985396b097e680e30b69fad6f1e92f86b0ea38ead388ec79a1859a; text https://openairdocs.org/service-documents/leonardo/sb-139-593/file/2d9c5420dd98.md. Rights: © Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2020-0649; AD 2021-03-07 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Leonardo](https://openairdocs.org/service-documents/leonardo.md)
- Type: Service bulletin (Alert Service Bulletin)
- Number: 139-593
- Latest revision known: 139-593, Revision A, dated June 14, 2019 (OpenAirDocs)
- Page: https://openairdocs.org/service-documents/leonardo/sb-139-593

## ADs that cite it (1) (OpenAirDocs)

Newest first, with the revision each names, as OpenAirDocs read it from the AD's text.

- [AD 2021-03-07](https://openairdocs.org/ad/2021-03-07.md), effective Apr 1, 2021: Revision A

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/leonardo/sb-139-593/proposed.md).

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