# STC SE4327SW-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: RAM Aircraft Limited Partnership, United States
- Description: Increase all operations power rating to 325 horse power (HP) at 40 inches of manifold pressure (MP) and 2700 RPM.
- Applied: July 25, 1980
- Status date: August 19, 2008
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E8CE](https://openairdocs.org/tcds/E8CE)
- Certificate PDF: https://openairdocs.org/files/sha256/37/f0/37f02f3fdcfd88d87f718c32e57855e6e321febd19ee75780fd10f89fa760dbb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A69A35B361240CC48625793C007000C7.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE4327SW-D

## ADs that name it (1)

- [AD 2004-08-10](https://openairdocs.org/ad/2004-08-10): Serial-numbered (SN) cylinders · Modify Teledyne Continental TSIO-520-NB engine (RAM Aircraft Limited Partnership STC SE09104SC or 4 others). Effective May 5, 2004. Named in the applicability

## Approved models (1)

- Teledyne Continental Motors TSIO-520-NB ([TCDS E8CE](https://openairdocs.org/tcds/E8CE))

## 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: SE327SW-D This certificate issued to: RAM Aircraft, Limited Partnership 7505 Karl May Drive Waco, IX 76708 Certifies that the change in the type design for the following product with the limitations and conditions therefor as spocified hereon meet's the airworthiness requirement's of Part 13 of the Civil Air Pegulations.

Original Product Type Certificate Number : E8CE Make: Teledyne Abodel. TSIO-520-NB Description of Type Design Change: Increase all operation power rating to 325 horse power (HP) at 40 inches of manifold pressure (MP) and 2700 RPM in accordance with RAM Report 82-2 dated 03/08/82; or increase all operation power rating to 325 HP at 41 inches of MP and 2700 RPM with RAM Drawing List 1186, Rev. F dated 07/11/86 or later FAA approved revision; or increase all operation power rating to 335 HP at 41 inches of MP and 2700 RPM in accordance with RAM Report No. 91-5 dated 04/30/1991, or later FAA approved revision.

The following supplements or later FAA approved revisions are required:

Date of Application: July 25, 1980 Date Reissued: October 08, 2001; February 07, 2008;

August 19, 2008 Date of Issuance: April 20, 1981 Date Amended: 03/29/82; 11/16/84; 07/25/86;

10/18/91 Revision 4 FEDERAL AVIATION By Direction of the Administrator

ORIGINAL SIGNED BY TERRY BOWDEN (Signature) TOMINISTRATIO Terry L. Bowden DAS administrator DAS-700100-SW RAM Aircraft LP Waco, Texas (Title)

FAA Form 6110-2(10-66) Page ! of !

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SEA327SW.D Date of Issuance: April 20, 1981 Date Amended: October 18, 1991 Reissuance Date: August 19,2008 Limitations and Conditions: (Continued):

a. For engines modified in accordance with RAM Report 82 -3

1. Overhaul Manual Supplement dated March 1984.

2. Operators Manual Supplement dated March 1982.

3. Parts Manual Supplement dated March 1982.

b. For engines modified in accordance with RAM List No. 1186 or RAM Report No. 91-5:

1. Overhaul Manual Supplement dated June 1986.

2. Operators Manual Supplement dated June 1986.

3. Parts Manual Supplement dated June 1986.

The installer must determine whether this design change is compatible with previously approved modifications. 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.

FAA Form 8110-2-1(10-69) Page 3 of 3

## Every issue (1)

- August 19, 2008: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/37/f0/37f02f3fdcfd88d87f718c32e57855e6e321febd19ee75780fd10f89fa760dbb)

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