# STC SA83CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Shadin Avionics, United States
- Description: Installation of a Shadin engine trend monitor system.
- Applied: April 9, 1993
- Status date: June 8, 2006
- Product: Aircraft, Single-Engine
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A37CE](https://openairdocs.org/tcds/A37CE)
- Certificate PDF: https://openairdocs.org/files/sha256/e8/29/e82943bdb7530e1d2ce6dd77a3bbacd30429a941de365c38d1f3b26f43f42d59
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DA927BC5D8841060862572FE006C7CBF.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA83CH

## ADs that name it (0)

None.

## Approved models (3)

- Cessna Aircraft Company 208 ([TCDS A37CE](https://openairdocs.org/tcds/A37CE))
- Cessna Aircraft Company 208A ([TCDS A37CE](https://openairdocs.org/tcds/A37CE))
- Cessna Aircraft Company 208B ([TCDS A37CE](https://openairdocs.org/tcds/A37CE))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

Part 23 of the Federal Aviation Regulations. (See Type Certificate Data Sheet No. A37CE for complete certification basis.)

Installation of a Shadin Engine Trend Monitor System per Shadin Report 3258, dated March 24, 1993, or later FAA approved revisions.

1) This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft..

2) FAA Approved Airplane Flight Manual Supplement dated July 7, 1993, or later FAA Approved revision is required.

Shadin Avionics 6831 Oxford Street St. Louis Park, MN 55426 A37CE Make : Cessna Model : 208, 208A, 208B Date of application : April 9, 1993

Date of issuance : July 7, 1993

Date reissued : June 8, 2006

( Signature) Charles L. Smalley Manager, Systems and Flight Test Branch Chicago Aircraft Certification Office

( Title)

FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES

Number SA83CH

Date of issuance : June 8, 2006

3) If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

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## Every issue (1)

- June 8, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e8/29/e82943bdb7530e1d2ce6dd77a3bbacd30429a941de365c38d1f3b26f43f42d59)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.