# STC SA03112AT

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Gomolzig Flugzeug-und Maschinenbau GmbH, Germany
- Description: Installation of Gomolzig Quietflight low noise silencer P/N PA-18-606500.
- Applied: January 14, 2004
- Status date: May 26, 2005
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-691](https://openairdocs.org/tcds/A-691)
- Certificate PDF: https://openairdocs.org/files/sha256/95/46/95467b5fc0ad9b3c3de17bfcbc618d57bdd72690efc4c6e07649176400353b2d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/66B4F68CE237C8468625703B0066138F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA03112AT

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2)) ([TCDS A-691](https://openairdocs.org/tcds/A-691))

## 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 IMPORT

FAA FORM 8110-2(10-68) PAGE 1 of 1 PAGES Number SA03112AT This certificate issued to Gomolzig Flugzeug-und Maschinenbau GmbH Loher Str. 1 Geb. 38, D-58332 Schwelm, Germany

Part 4a of the Civil Air Regulations.

Original Product--Type Certificate Number : A-691 Make : Piper Model : J3C -65 Description of Type Design Change: Installation of Gomolzig Quietflight low noise silencer P/N PA-18-606500 in Piper Model J3C-65 aircraft equipped with Continental A65 series engines. Aircraft modification shall be performed in accordance with Gomolzig Quietflight Low Noise Silencer Kit “System Gomolzig” PA18-606500 Installation Instructions dated October 2001, 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. The requirements of Airworthiness Directive 68- 05-01 continue to apply to the modified aircraft. The modified aircraft shall be operated in accordance with Gomolzig Pilot’s Operating Handbook and FAA Approved Airplane Flight Manual Supplement for Piper PA-18 all types, PA-19 and J3C Equipped with Gomolzig Silencer Kit PA18-606500 dated May 26, 2005 and maintained in accordance with Gomolzig Quietflight Low Noise Silencer Kit “System Gomolzig” PA18-606500 Installation Instructions dated October 2001, or later FAA Approved revisions. This STC was issued in accordance with 14 CFR 21.29 and was based upon a validation of the German LBA STC Number SA0605.

Date of application : January 14, 2004

Date of issuance : May 26, 2005 Date reissued :

( Signature) Melvin D. Taylor Manager Atlanta Aircraft Certification Office

(Title)

## Every issue (1)

- May 26, 2005: Issued, Current. [certificate](https://openairdocs.org/files/sha256/95/46/95467b5fc0ad9b3c3de17bfcbc618d57bdd72690efc4c6e07649176400353b2d)

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