# STC SE03701AT

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: John Jewell Aircraft Inc, United States
- Description: Increase the main jet size of TCM MA4-5 carburetors of TCM O-470-U engines, to increase engine power from 230 BHP at 2400 RPM to 252 BHP at 2625 RPM.
- Applied: April 15, 2008
- Status date: June 23, 2009
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3E1](https://openairdocs.org/tcds/3E1)
- Certificate PDF: https://openairdocs.org/files/sha256/58/d6/58d687b6b8e2c73123bcf0187f38f1fc156949a28757e37198cff2e0f83607d4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/067DE02D4AE125CB862575FC006B4C6E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE03701AT

## ADs that name it (0)

None.

## Approved models (1)

- Teledyne Continental Motors IO-470-U ([TCDS 3E1](https://openairdocs.org/tcds/3E1))

## 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: SE03701AT This certificate issued to: John Jewell Aircraft, Inc.

162 A.Q. Greer Dr.

Holly Springs, MS 38635 Part 13 of the CAR.

Original Product - - Type Berlificate Number E-273 Make: Teledyne Continental Motors Model: O-470-U Description of Type Design Change:

Increase the main jet size of TCM MA4-5 carburetors of TCM O-470-U engines, to increase engine power from 230 BHP at 2400 RPM to 252 BHP at 2625 RPM, in accordance with John Jewell Aircraft, Inc., Master Drawing JJ0801-07, Revision A, dated 13 May, 2009, or later FAA Approved Revision.

Limitations and Conditions: : This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any other previously approved modifications will produce no adverse effect upon the airworthiness of that aircraft. 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.

Date of Application: April April 2008 Date Reissued:

Date of Issuance: June 23,2009 Date Amended:

FEDERAL AVIATION direction of the Administrator J (Signature) Melvin D. Taylo TOMINISTRATO Atlanta Aircraft Certification Office Manager (Title)

## Every issue (1)

- June 23, 2009: Issued, Current. [certificate](https://openairdocs.org/files/sha256/58/d6/58d687b6b8e2c73123bcf0187f38f1fc156949a28757e37198cff2e0f83607d4)

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