# STC SA00188WI

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Petersen Aviation Inc, United States
- Description: Operation of airplane on unleaded or leaded automotive gasoline, 87 minimum antiknock index (RON+MON)/2.
- Applied: March 30, 1994
- Status date: August 12, 1994
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-749](https://openairdocs.org/tcds/A-749)
- Certificate PDF: https://openairdocs.org/files/sha256/51/90/51906f4ad3ff2079beb74909374081f67a7090d183822863e5b70d8b2d9ed361
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3E80155B18BB872A862572D6005493E1.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA00188WI

## ADs that name it (0)

None.

## Approved models (1)

- Ryan Aeronautical Company ST-3KR ([TCDS A-749](https://openairdocs.org/tcds/A-749))

## What the certificate says

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA00188WI This certificate issued to: Petersen Aviation, Inc.

Route 1, Box 18 Minden, Nebraska 68959 Purt 42 of the IVIL AIr Regulations Original Product -Typebertificate Number: A-749 Make: Ryan Model: S1-3KR (PT-22, PI-22A) Description of Type Design Change: Operation of airplane on unleaded or leaded automotive gasoline, 87 minimum antiknock index (RON+MON) /2, per ASTM Specification D-439. Intermixing with aviation gasoline also approved. Data Required: Petersen Drawing ST-3KR dated 3/3/1994, or later "FAA Approved" revision.

Limitations and Conditions: Limited to those airplanes equipped with gravity fuel feed to the carburetor and engines modified in accordance with STC SE00187WI. This approval should not be extended to other specific airplanes of these 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 woon the airworthiness of that airplane

Date of Application: March 30, 1994 Jule wissued:

Date of Issuance: August 12, 1994 Date Amended:

FEDERAL AVIATION 'By dirtin / the SIdministra Dr181nal Signed By James A. Schueler® James A. Schueler Signature) TAMINI STRAITS Acting Manager, Propulsion Branch Wichita Aircraft Carlification Office

47.

## Every issue (1)

- August 12, 1994: Issued, Current. [certificate](https://openairdocs.org/files/sha256/51/90/51906f4ad3ff2079beb74909374081f67a7090d183822863e5b70d8b2d9ed361)

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