# Wipaire Service Letter 253

## Copies (3)

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

- Revision H ("Wipaire Service-Letter-253-Rev-H"), 15 pages: PDF https://openairdocs.org/files/sha256/93/7f/937f406681e75fce6024cbfe2a960cd86174778f6035232b6a6bbb438b548a35; text https://openairdocs.org/service-documents/wipaire/sl-253/file/937f406681e7.md. Rights: © Wipaire. Filed by the FAA in regulations.gov docket FAA-2026-7236; AD 2026-16-12 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Revision D ("Wipaire Service Letter 253 Rev D"), 14 pages: PDF https://openairdocs.org/files/sha256/b7/ae/b7ae9c6be03b416e5f270af963664ba9e63dc00e1889556c2e52ac98c180eb2d; text https://openairdocs.org/service-documents/wipaire/sl-253/file/b7ae9c6be03b.md. Rights: © Wipaire. Filed by the FAA in regulations.gov docket FAA-2024-2013; AD 2024-16-06 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Revision B ("Wipaire Inc Service Letter 253 Rev B"), 6 pages: PDF https://openairdocs.org/files/sha256/5c/d6/5cd6f293abf60d2d902f15fc8a630f9ee38daa6b89f0d8a49fbcf7c08cb0348f; text https://openairdocs.org/service-documents/wipaire/sl-253/file/5cd6f293abf6.md. Rights: © Wipaire. Filed by the FAA in regulations.gov docket FAA-2023-1653; AD 2023-15-07 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Wipaire](https://openairdocs.org/service-documents/wipaire.md)
- Type: Service letter (Service Letter)
- Number: 253
- Latest revision known: 253, Revision H, dated July 27, 2026 (OpenAirDocs)
- Page: https://openairdocs.org/service-documents/wipaire/sl-253

## ADs that cite it (3) (OpenAirDocs)

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

- [AD 2026-16-12](https://openairdocs.org/ad/2026-16-12.md), effective Aug 31, 2026: Revisions D and H
- [AD 2024-16-06](https://openairdocs.org/ad/2024-16-06.md), effective Sep 4, 2024: Revisions A, B and D
- [AD 2023-15-07](https://openairdocs.org/ad/2023-15-07.md), effective Aug 9, 2023: Revisions A and B

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