# STC SA518SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Mike Jones Aircraft Sales Inc., United States
- Description: Installation of Continental IO-520-E derated engines and McCauley D3AF32C87/82NC-6 or -8 propellers.  Modification to be accomplished in accordance with Colemill Enterprises, Inc. Drawing AC5800 Rev. A and AC5801 Rev A and Installation Instructions dated 7 July 1972 and revised 21 August 1972.  Owner s Manual Supplement dated 21 August 1972 included in data.
- Applied: July 7, 1972
- Status date: February 10, 2011
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A25](https://openairdocs.org/tcds/3A25)
- Certificate PDF: https://openairdocs.org/files/sha256/d3/1b/d31b9482bd023c0e17f8bfba86992a6328e8f01380ec786c93fa16e452948aba
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DE01021A1913FF388625784E00793ABB.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA518SO

## ADs that name it (1)

- [AD 77-13-17](https://openairdocs.org/ad/77-13-17): Actuating Pins · McCauley Propeller Systems 2A34C, 2AF34C55, 3AF32C75 and 9 more. Effective Jul 6, 1977. Cited in the text

## Approved models (5)

- Cessna Aircraft Company 320 ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- Cessna Aircraft Company 320-1 ([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))

## What the certificate says

The certificate has no text we could read; open the PDF to read it.

## Every issue (1)

- February 10, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/d3/1b/d31b9482bd023c0e17f8bfba86992a6328e8f01380ec786c93fa16e452948aba)

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