# STC SA01142SE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Merlyn Products Inc., United States
- Description: Installation of the Merlyn Products Inc. Model 290 or 300 Turbocharger system
- Applied: August 5, 2002
- Status date: September 24, 2012
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 6A1](https://openairdocs.org/tcds/6A1)
- Certificate PDF: https://openairdocs.org/files/sha256/a9/34/a9342cd7673f1b7291309b85496f8c9c97ef7679c6a4c32dd0a230c83707027b
- Approved model list and other attachments: [SA01142SE_AML.pdf](https://openairdocs.org/files/sha256/8a/8d/8a8d08fcf423d7ae2889cd66f73dcebc024d170ad2ad303d748224e9dfb1fdef)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/198E87820D247BD586257A85004D7FCC.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA01142SE

## ADs that name it (0)

None.

## Approved models (3)

- Twin Commander Aircraft LLC 500-B ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 500-S ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 500-U ([TCDS 6A1](https://openairdocs.org/tcds/6A1))

## 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.

Number SA01142SE This certificate, issued to Merlyn Products, Inc.

West 7500 Park Drive Spokane, WA 99224-5726 Part * of the * Regulations.

Original ProductType Certificate Number: *See attached FAA Approved Model List (AML) Make: No. SA01142SE for a list of approved airplane Model: models and applicable airworthiness regulations.

Description of the Type Design Change: Installation of the Merlyn Products Inc. Model 290 or 300 Turbocharger system in accordance with the provisions of AML SA01142SE, dated November 12, 2002, or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies to the above models only.

This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated, unless it is determined that the relationships between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate and the appropriate Airplane Flight Manual Supplement, dated November 12, 2002, or later FAA approved revision, must be maintained as part of the permanent records for the modified 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: August 5, 2002 Date reissued:

Date of issuance: November 12, 2002 Date amended:

(Signature) Acting Manager, Seattle Aircraft Certification Office (Title)

### SA01142SE_AML.pdf

FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SA01142SE FOR INSTALLATION OF MERLYN PRODUCTS, INC. MODEL 290 AND 300 TURBOCHARGER SYSTEM ISSUE DATE: November 12, 2002

Page 1 of 1

**ITEM AIRCRAFT MAKE**

**AIRCRAFT MODEL**

**ORIGINAL TC NUMBER**

**CERTIFICATION**

**BASIS FOR**

**ALTERATION**

**FAA APPROVED**

**MASTER DRAWING LIST**

**INSTALLATION**

**INSTRUCTIONS**

**AIRPLANE FLIGHT MANUAL**

SUPPLEMENT AML REV DATE Drawing Revision* Number Revision* Number Date*

1. Twin Commander 500B, 500S, 500U (See Note 1) 6A1 CAR 3 37-TDL-32 F MPi Report, 37-32-01 Revision H, dated 2/2/10 37-32-AFMS Revision A, dated 11/17/03 9/24/12

2. Twin Commander 500B, 500S, 500U (See Note 2) 6A1 CAR 3 37-TDL-33 F MPi Report, 37-33-01 Revision G, dated 2/24/12 37-33-AFMS Revision A, dated 11/17/03 9/24/12

3. Twin Commander 500B, 500S, 500U (See Note 1) 6A1 CAR 3 37-TDL-32 F MPi Report, 37-32-01 Revision H, dated 2/2/10 37-32-GW-AFMS Revision B, dated 6/16/06 9/24/12 * Or later FAA Approved Revision NOTE 1: Only aircraft with two (2) Lycoming IO-540-E1A5 or two (2) Lycoming IO-540-E1B5 engines installed are eligible for modification.

NOTE 2: Only aircraft with two (2) Lycoming IO-540-M1C5 engines installed in accordance with Merlyn Products Inc. STC SA00169SE or two (2) Lycoming IO-540-M1A5 engines installed in accordance with a separate FAA installation approval are eligible for modification.

FAA Approved:

Acting Manager, Seattle Aircraft Certification Office AMENDED: 4/3/03; 11/19/03; 6/8/06; 1/31/07; 9/24/12 REISSUED:

## Every issue (2)

- September 24, 2012: Amended, Current. [certificate](https://openairdocs.org/files/sha256/a9/34/a9342cd7673f1b7291309b85496f8c9c97ef7679c6a4c32dd0a230c83707027b), [SA01142SE_AML.pdf](https://openairdocs.org/files/sha256/8a/8d/8a8d08fcf423d7ae2889cd66f73dcebc024d170ad2ad303d748224e9dfb1fdef)
- November 12, 2002: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/a9/34/a9342cd7673f1b7291309b85496f8c9c97ef7679c6a4c32dd0a230c83707027b)

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