# STC SA3858NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Turbotech Inc, United States
- Description: Installation of a Lycoming O-360-A1A engine as modified for turbosupercharger operation by STC No SE3859NM to maintain 29 INHG maximum manifold pressure
- Applied: March 18, 1987
- Status date: July 1, 1987
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A12](https://openairdocs.org/tcds/3A12)
- Certificate PDF: https://openairdocs.org/files/sha256/28/a7/28a7240878616b1b0f62840830413cd1f8e3bd68d766a1cf1ba967e5ec768aa3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E76C91468870A36A86257A09005835D4.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3858NM

## ADs that name it (0)

None.

## Approved models (1)

- Cessna Aircraft Company 172N ([TCDS 3A12](https://openairdocs.org/tcds/3A12))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

*niced Start of Scrica Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA3858NM This certificate issued to: Turbotech, INC.

Purt 3 of the CIV11 AIT Regulations:

Original Product - Typerbertificate Number: 3A12 Make: Cessna Model: 172N Description of Type Design Change:

Installation of a Lycoming 0-360-A1A engine as modified for turbosupercharger operation by Supplemental Type Certificate No. SE3859NM to maintain 29 INHG maximum manifold pressure. This modification is in accordance with Turbotech, Inc. Cessna 172-180HP Turbo Installation Instructions, dated March 18, 1987, and photographs numbers 1 through 16.

inadequate for duplication in other aircraft. This approval is limited to the Limitations and Conditions: Data pertaining to this modification are considered installation in Cessna model 172N aircraft, Serial Number 17269899, Registration Number N172TR only. A copy of this certificate, and Aircraft Flight Manual Supplement shall be maintained as part of the permanent records for the modified aircraft.

## Every issue (1)

- July 1, 1987: Issued, Current. [certificate](https://openairdocs.org/files/sha256/28/a7/28a7240878616b1b0f62840830413cd1f8e3bd68d766a1cf1ba967e5ec768aa3)

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