# STC SA2525CE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Petersen Aviation Inc, United States
- Description: Installation of Engine Anti- Detonation Injection (ADI) system for operation of the airplane on leaded and unleaded automotive gasoline, 91 minimum antiknock index (RON+MON/2).
- Applied: May 17, 1989
- Status date: September 6, 2017
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21)
- Certificate PDF: https://openairdocs.org/files/sha256/f6/78/f678d6fd89dc5bcffb27739b1574e8943a948e05115f5d0c44c96102cb0b70b9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C67AD273EB87832F8625819900464FCC.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA2525CE

## ADs that name it (0)

None.

## Approved models (4)

- The Cessna Aircraft Company 210 ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- The Cessna Aircraft Company 210A ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- The Cessna Aircraft Company 210B ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- The Cessna Aircraft Company 210C ([TCDS 3A21](https://openairdocs.org/tcds/3A21))

## 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.

FAA FORM 8110-2(10-68) PAGE 1 of 2 PAGES SA2525CE REISSUED ON SEPTEMBER 6, 2017 TO SUPERSEDE THE ORIGINAL STC, WHICH WAS LOST OR MISPLACED.

Petersen Aviation, Inc.

984 K Road Minden, NE 68959

3 Civil Air and Special Conditions #23-ACE-23.

- 3A21 Cessna 210, 210A, 210B, 210C

Installation of Engine Anti -Detonation Injection (ADI) system for operation of the airplane on leaded and unleaded automotive gasoline, 91 minimum antiknock index (RON+MON/2) per ASTM Specification D-439. Intermixing with aviation gasoline also approved. Data required: 1. A copy of this certificate. 2. Petersen Drawing List No. 210-TL-2 revised August 22, 1989, or later FAA Approved revision. 3. FAA Approved Airplane Flight Manual Supplement, dated August 22, 1989, or later FAA Approved revision.

Limited to those airplanes equipped with engines modified in accordance with STC SE2450CE. This approval should not be extended to other specific airplanes of those models on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of the other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. Limited to installations completed at the facilities of Petersen Aviation, Inc.

September 6, 2017

Original signed by Tina Miller (Signature) Tina Miller Associate ACO Manager, AIR-7K5 Wichita ACO Branch (Title)

May 17, 1989 August 22, 1989

## Every issue (1)

- September 6, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f6/78/f678d6fd89dc5bcffb27739b1574e8943a948e05115f5d0c44c96102cb0b70b9)

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