# Leonardo Alert Service Bulletin 189-237

## Copies (6)

Copies the FAA filed in AD dockets on regulations.gov, newest revision first. A newer revision may exist.

- Revision D ("Leonardo Helicopters Emergency ASB No. 189-237 Rev D"), 38 pages: PDF https://openairdocs.org/files/sha256/ad/5f/ad5fc07783f65871e5ffe0ba9ff8f2048a6a7100d28402d5c2a8655435aacc94; text https://openairdocs.org/service-documents/leonardo/sb-189-237/file/ad5fc07783f6.md. Rights: © Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2021-0612, the docket of AD 2021-20-17. Not covered by OpenAirDocs’ CC0 dedication.
- Revision C ("Leonardo Helicopters Emergency ASB No. 189-237 Rev C"), 38 pages: PDF https://openairdocs.org/files/sha256/fa/83/fa83f442d1bf1902a16f90568090fd293f17cdcb1a376caf140b988b9769a35d; text https://openairdocs.org/service-documents/leonardo/sb-189-237/file/fa83f442d1bf.md. Rights: © Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2021-0612, the docket of AD 2021-20-17. Not covered by OpenAirDocs’ CC0 dedication.
- Revision B ("Leonardo Helicopters Emergency ASB No. 189-237 Rev B"), 37 pages: PDF https://openairdocs.org/files/sha256/86/ab/86ab9b14777015bc7b7fff7dbb4c2491182c6dda6340049e1621fe1152f3b6df; text https://openairdocs.org/service-documents/leonardo/sb-189-237/file/86ab9b147770.md. Rights: © Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2021-0612, the docket of AD 2021-20-17. Not covered by OpenAirDocs’ CC0 dedication.
- Revision B ("Leonardo Helicopters Emergency ASB No. 189-237 Rev B (EC)"), 38 pages: PDF https://openairdocs.org/files/sha256/99/06/99063fb0125b38905882a655a29bfd36eae4f8552f4acc4b2ce81780817c9baa; text https://openairdocs.org/service-documents/leonardo/sb-189-237/file/99063fb0125b.md. Rights: © Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2021-0612, the docket of AD 2021-20-17. Not covered by OpenAirDocs’ CC0 dedication.
- Revision A ("Leonardo Helicopters Emergency ASB No. 189-237 Rev A"), 49 pages: PDF https://openairdocs.org/files/sha256/57/5d/575ddf496db2e2819c2043651ee4ed5f1b730aee61f1abe16754e1ef0341500e; text https://openairdocs.org/service-documents/leonardo/sb-189-237/file/575ddf496db2.md. Rights: © Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2021-0612, the docket of AD 2021-20-17. Not covered by OpenAirDocs’ CC0 dedication.
- Leonardo Helicopters Emergency ASB No. 189-237 ("Leonardo Helicopters Emergency ASB No. 189-237"), 45 pages: PDF https://openairdocs.org/files/sha256/f0/06/f006e21a44a851ae24564cbfc51edaa14cef8e9aa63eebd5edbd96475df1f60d; text https://openairdocs.org/service-documents/leonardo/sb-189-237/file/f006e21a44a8.md. Rights: © Leonardo S.p.A. Filed by the FAA in regulations.gov docket FAA-2021-0612, the docket of AD 2021-20-17. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Leonardo](https://openairdocs.org/service-documents/leonardo.md)
- Type: Service bulletin (Alert Service Bulletin)
- Number: 189-237
- Latest revision known: 189-237, Revision D, dated August 4, 2020 (OpenAirDocs)
- Page: https://openairdocs.org/service-documents/leonardo/sb-189-237

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

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

- [AD 2021-20-17](https://openairdocs.org/ad/2021-20-17.md), effective Nov 22, 2021: Revisions A, B, C and D

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/leonardo/sb-189-237/proposed.md).

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