# STC SA110RM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Heliarc Welding Service Inc., United States
- Description: Modify Cessna exhaust system by replacement of the inter-cylinder expansion joints with a slip fit joint.
- Applied: June 14, 1977
- Status date: August 17, 1977
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10), [TCDS 3A25](https://openairdocs.org/tcds/3A25)
- Certificate PDF: https://openairdocs.org/files/sha256/fb/14/fb14d3ab62b79104fe946aa546a156ba6f0f4b3ded724e082e9c1594e44a30fc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/875F07788F393AD886257975006F270E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA110RM

## ADs that name it (0)

None.

## Approved models (12)

- Cessna Aircraft Company 320 ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320A ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320B ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320C ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320D ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320E ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320F ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 340 ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 340A ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company T310P ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Cessna Aircraft Company T310Q ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Cessna Aircraft Company T310R ([TCDS 3A10](https://openairdocs.org/tcds/3A10))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- August 17, 1977: Issued, Current. [certificate](https://openairdocs.org/files/sha256/fb/14/fb14d3ab62b79104fe946aa546a156ba6f0f4b3ded724e082e9c1594e44a30fc)

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