# STC SE2901NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Real Gaskets Tennessee, United States
- Description: Lycoming valve cover gasket
- Applied: September 18, 1984
- Status date: November 20, 2014
- Product: Engine
- Certification basis: Part 13, Part 21
- Data sheets: [TCDS 1E12](https://openairdocs.org/tcds/1E12), [TCDS 1E10](https://openairdocs.org/tcds/1E10), [TCDS 1E4](https://openairdocs.org/tcds/1E4), [TCDS E-223](https://openairdocs.org/tcds/E-223), [TCDS E-274](https://openairdocs.org/tcds/E-274), [TCDS E-286](https://openairdocs.org/tcds/E-286), [TCDS E-295](https://openairdocs.org/tcds/E-295), [TCDS E-229](https://openairdocs.org/tcds/E-229)
- Certificate PDF: https://openairdocs.org/files/sha256/bb/19/bb197b0a756c641099c09cfaa149fc640524cd4f2cc031a0c5eed6a4c23763ae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/55362EBCD0FA629786257DB0005304FA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE2901NM

## ADs that name it (0)

None.

## Approved models (305, first 50)

- Lycoming Engines IO-320-A1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-A2A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-B1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-B1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-B1C ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-B1D ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-B1E ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-B2A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-C1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-C1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-D1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-D1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-D1C ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-E1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-E1B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-E2A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-E2B ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-320-F1A ([TCDS 1E12](https://openairdocs.org/tcds/1E12))
- Lycoming Engines IO-360-A1A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A1B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A1B6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A1B6D ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A1C ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A1D ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A1D6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A1D6D ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A2A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A2B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A2C ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A3B6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A3B6D ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-A3D6D ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B1A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B1B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B1C ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B1D ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B1E ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B1F ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B1F6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B1G6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B2E ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B2F ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B2F6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-B4A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-C1A ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-C1B ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-C1C ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-C1C6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-C1D6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))
- Lycoming Engines IO-360-C1E6 ([TCDS 1E10](https://openairdocs.org/tcds/1E10))

All 305: https://openairdocs.org/stc/SE2901NM/models.md

## 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.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Possession of this Su pplemental Type Certificate (STC) document by persons other than the STC holder does not constitute rights to the design data nor t o alter an aircraft, aircraft engine, or propeller. The STC’s supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the ST C holder.

FAA Form 8110-2 (5/14) Page 1 of 3

Number: SE2901NM

This certificate issued to: Real Gaskets Tennessee 2506 Stateline Road Elizabethton, TN 37643

Part 13 of the Civil Air Regulations.

Original Product – Type Certificate Number: (see page 3) Make: Lycoming Model: (see page 3)

Lycoming valve cover gasket, part number (P/N) 75906 for the engine models listed on page 3 of this Supplemental Type Certificate (STC) is replaced by the gasket P/N RG-75906-SP, manufactured in accordance with drawing No. 01, dated February 14, 1985, or later FAA approved revision. Installation is accomplished in accordance with Real Gaskets Tennessee document No.

RG-75906-SP, Revision: IV, dated 5/30/2014, or later FAA approved revision.

Approval of this change in type design applies to the engine models listed on Page 3 of this STC only. The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the engine.

(Limitations and Conditions continued on page 3 of 3)

Date of Application: September 19, 1984 Date Reissued: 7/31/1985; 7/13/2001; 11/15/2011; 11/20/2014 Date of Issuance: March 4, 1985 Date Amended: 7/31/1985; 7/13/2001

Signature

Title

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate This certificate may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21. 47.

FAA Form 8110-2 (5/14) Page 2 of 3

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SE2901NM

This certificate may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21. 47.

FAA Form 8110-2 (5/14) Page 3 of 3

Instructions for Continued Airworthiness (ICA), Real Gaskets Tennessee Document No. RG-75906-SP, Rev. IV, dated 5/30/2014, or later FAA accepted revision must be made available to the operator at the time of installation.

**APPLICABILITY OF THE TYPE DESIGN CHANGE ENGINE MODEL TYPE CERT.**

**NUMBER REGULATION**

**CERTIFICATION BASIS**

**EFFECTIVE DATE AMENDMENTS**

**O-235 E-223 CAR 13 05/31/38 11/15/40 06/15/56 13-1, 13-2, 13-3**

**O-290 E-229 CAR 13 08/01/41 13-1 03/05/52 13-1, 13-2 06/15/56 13-1, 13-2, 13-3**

**O-320 E-274 CAR 13 03/05/52 13-1, 13-2 06/15/56 13-1, 13-2, 13-3, 13-4**

**IO-320 1E12 CAR 13 06/15/56 13-1, 13-2, 13-3, 13-4**

**O-360 E-286 CAR 13 03/05/56 13-1, 13-2 06/15/56 13-1, 13-2, 13-3, 13-4**

**IO-360 IE10 CAR 13 06/15/56 13-1, 13-2, 13-3**

**HIO-360 IE10 CAR 13 06/15/56 13-1, 13-2, 13-3**

**O-540 E-295 CAR 13 06/15/56 13-1, 13-2, 13-3, 13-4**

**IO-540 1E4 CAR 13 06/15/56 13-1, 13-2, 13-3**

## Every issue (2)

- November 20, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/bb/19/bb197b0a756c641099c09cfaa149fc640524cd4f2cc031a0c5eed6a4c23763ae)
- November 15, 2011: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/d3/88/d388843ef7cd6599d55bb47a1a35920f467259b37e8e7c922a3fd077dd0014da)

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