# Lycoming Service Instruction 1238

Copy: Revision B ("U.S. DOT/FAA - Lycoming Service Instruction 1238B"), 3 pages: PDF https://openairdocs.org/files/sha256/6a/a8/6aa8a65661e648531aa57d39112104c7d6b08768b1255b9f953745774a701806; text https://openairdocs.org/service-documents/lycoming/si-1238/file/6aa8a65661e6.md. Rights: © Avco Corporation. Filed by the FAA in regulations.gov docket FAA-2014-0437; AD 2014-23-03 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: 1238
- Latest revision known: 1238B, dated January 6, 2010 (OpenAirDocs)
- Page: https://openairdocs.org/service-documents/lycoming/si-1238

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

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

- [AD 2014-23-03](https://openairdocs.org/ad/2014-23-03.md), effective Dec 18, 2014: Revision B
- [AD 2013-10-04](https://openairdocs.org/ad/2013-10-04.md), effective Jul 17, 2013: Revision B
- [AD 2010-13-07](https://openairdocs.org/ad/2010-13-07.md), effective Jul 28, 2010: Revision B

Also cited in [1 proposed AD](https://openairdocs.org/service-documents/lycoming/si-1238/proposed.md).

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.