# Kidde Aerospace Service Bulletin 473919-26-521

Copy: Revision 02 ("473919-26-521 R2"), 6 pages: PDF https://openairdocs.org/files/sha256/5e/8c/5e8cf82f1155d82a694fd4a2cbd64d72f00e36237ffa37b0f3564eb397019f2b; text https://openairdocs.org/service-documents/kidde/sb-473919-26-521/file/5e8cf82f1155.md. Rights: © KIDDE TECHNOLOGIES, INC. Filed by the FAA in regulations.gov docket FAA-2020-0209; AD 2020-21-02 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Kidde Aerospace](https://openairdocs.org/service-documents/kidde.md)
- Type: Service bulletin (Service Bulletin)
- Number: 473919-26-521
- Latest revision known: 473919-26-521, Revision 02, dated November 7, 2019 (OpenAirDocs)
- Page: https://openairdocs.org/service-documents/kidde/sb-473919-26-521

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

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

- [AD 2020-21-02](https://openairdocs.org/ad/2020-21-02.md), effective Nov 19, 2020: Revision 02

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/kidde/sb-473919-26-521/proposed.md).

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