# STC SE2593CE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Petersen Aviation Inc, United States
- Description: Add unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index(RON + MON)/2, per ASTM Specification D-439. (SUPER SCARAB SERIES 185J R-550-1, -3)
- Applied: February 1, 1990
- Status date: March 6, 1990
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E-235](https://openairdocs.org/tcds/E-235)
- Certificate PDF: https://openairdocs.org/files/sha256/59/d2/59d2d18508ffb04671dd20679e76a6fbebcf88a07e9d71d1b88e1ffac426836e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AE4DEA8D295B9D5186257F2B005D2783.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE2593CE

## ADs that name it (0)

None.

## Approved models (3)

- Olson George Company Super Scarab Series 185 ([TCDS E-235](https://openairdocs.org/tcds/E-235))
- Olson George Company Super Scarab Series 185J ([TCDS E-235](https://openairdocs.org/tcds/E-235))
- Olson George Company Super Scarab Series 185K ([TCDS E-235](https://openairdocs.org/tcds/E-235))

## 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: SE2593CE This certificate issued to: Petersen Aviation, InC.

Route 1, Box 18 Minden, Nebraska 68959 Part of the Civil Air Regulalions. See Engine Listing pages 70 and 71 for complete certification basis Original Product -Sypebertificate Number: 23:

Make: Warner Model: Super Scarab 185, 185J (R-550-1, Description of Type Design Change: -3), 185K Add the following approved fuel: unleaded automotive gasoline, B7 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index (RON + MON)/2, per ASTM Specificatior D-439. Intermixing with aviation gasoline also approved. Data A copy of this certificate. 2. Petersen Drawing List No. SS-50-2 dated February 1, 1990, or later "FAA Approved" revision.

Limitations and Conditions: This approval should not be extended to other specific engines of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of these engine models. Specific approval must be obtained for each model aircraft to insure compatibility with its fuel system.

Date of Application: February 1, 1990 Date Reissued:

Date of Issuance: March 6, 1990 Date Amended:

FEDERAL AVIATION By Direction of the Administrator Original Signed by Ronald K. Rathgeber (Signature) TO MINISTRATOS fo) Lawrence A. Herron, Manager Wichita Aireraff Certification Office

## Every issue (1)

- March 6, 1990: Issued, Current. [certificate](https://openairdocs.org/files/sha256/59/d2/59d2d18508ffb04671dd20679e76a6fbebcf88a07e9d71d1b88e1ffac426836e)

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