# Lycoming Service Instruction 1009

## Copies (2)

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

- Revision BF ("Lycoming Service Instruction 1009BF"), 10 pages: PDF https://openairdocs.org/files/sha256/e1/d6/e1d693e6d6c0787c66750c1d6d9410dd49258a8a6cd78f6a8b2589f6baabbf23; text https://openairdocs.org/service-documents/lycoming/si-1009/file/e1d693e6d6c0.md. Rights: © Avco Corporation. Filed by the FAA in regulations.gov docket FAA-2026-13797; AD 2026-22-13 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.
- Revision BE ("Lycoming_ SI_1009BE"), 8 pages: PDF https://openairdocs.org/files/sha256/6b/b5/6bb5bf91a4460a0779123734378d0d4e5fe5e38cb269edf2ae8867128573fa78; text https://openairdocs.org/service-documents/lycoming/si-1009/file/6bb5bf91a446.md. Rights: © Avco Corporation. Filed by the FAA in regulations.gov docket FAA-2026-8789; AD 2026-17-10 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication.

## Details

- Manufacturer: [Lycoming](https://openairdocs.org/service-documents/lycoming.md)
- Type: Service instruction (Service Instruction)
- Number: 1009
- Latest revision known: 1009BF, dated July 20, 2026 (OpenAirDocs)
- Page: https://openairdocs.org/service-documents/lycoming/si-1009

## ADs that cite it (5) (OpenAirDocs)

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

- [AD 2026-22-13](https://openairdocs.org/ad/2026-22-13.md), effective Nov 24, 2026: Revision BF
- [AD 2026-17-10](https://openairdocs.org/ad/2026-17-10.md), effective Sep 14, 2026: Revision BE
- [AD 2012-19-01](https://openairdocs.org/ad/2012-19-01.md), effective Oct 24, 2012: Revision AU
- [AD 2006-20-09](https://openairdocs.org/ad/2006-20-09.md), effective Nov 3, 2006: Revisions AR and AS
- [AD 96-09-10](https://openairdocs.org/ad/96-09-10.md), effective Jul 15, 1996: Revision AJ

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/lycoming/si-1009/proposed.md), [2 SAIBs](https://openairdocs.org/service-documents/lycoming/si-1009/saibs.md), [74 NTSB investigations](https://openairdocs.org/service-documents/lycoming/si-1009/ntsb.md).

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