# STC SA1401NW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Knots 2U Ltd., United States
- Description: Installation of fiberglass wing tips with recognition lights.
- Applied: April 8, 1981
- Status date: August 14, 2008
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A13](https://openairdocs.org/tcds/2A13), [TCDS A3SO](https://openairdocs.org/tcds/A3SO), [TCDS A7SO](https://openairdocs.org/tcds/A7SO)
- Certificate PDF: https://openairdocs.org/files/sha256/e4/31/e4312d54bc1afc36e3895a0f7dd37dc38a3a9003b6cf1855b65e33d38cb2a233
- Approved model list and other attachments: [SA1401NW.pdf](https://openairdocs.org/files/sha256/0f/08/0f08d96bce072b7763739e0b904d71248118697deb8f2178348ba24e7b9ed67a)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EB3F46F1F1E14D28862574E20080EDDA.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1401NW

## ADs that name it (0)

None.

## Approved models (16)

- Piper Aircraft Inc. PA-28-140 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28-150 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28-160 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28-180 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28-235 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28R-180 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28R-200 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28S-160 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-28S-180 ([TCDS 2A13](https://openairdocs.org/tcds/2A13))
- Piper Aircraft Inc. PA-32-300 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32R-300 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32RT-300 ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-32RT-300T ([TCDS A3SO](https://openairdocs.org/tcds/A3SO))
- Piper Aircraft Inc. PA-34-200 ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))
- Piper Aircraft Inc. PA-34-200T ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))
- Piper Aircraft Inc. PA-34-220T ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))

## 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.

**FAA APPROVED MODEL LIST (AML) NO. SA1401NW KNOTS 2U, LTD.**

INSTALLING FIBERGLASS WING TIPS WITH RECOGINITION LIGHTS ISSUE DATE: 4/10/85

**ITEM**

**AIRCRAFT**

**AIRCRAFT**

**ORIGINAL TYPE**

**CERTIFICATION BASIS**

**INSTALLATION**

**INSTRUCTIONS**

AFM

AML

**MAKE MODEL CERTIFICATE NUMBER FOR**

**ALTERATION**

**NUMBER**

**REVISION NO. & DATE**

**SUPPLEMENT**

**NUMBER/DATE**

**AMENDMENT DATE**

Page 1 of 1 1 Piper Aircraft, Inc. PA-28-140, PA-28-150, PA-28-160, PA-28-180, PA-28-235, PA-28R-180, PA-28R-200, PA-28S-160, PA-28S-180 2A13 CAR 3 Installation Manual No. RMD-00150-PS Revsion B, Dated 11/1/07 N/A 8/14/08 2 Piper Aircraft, Inc. PA-34-200, PA-34-200T, PA-34-220T A7SO FAR 2 Installation Manual No. RMD-00150-PS Revsion B, Dated 11/1/07 N/A 8/14/08 3 Piper Aircraft, Inc. PA-32-300, PA-32R-300, PA-32RT-300, PA-32RT-300T A3SO CAR 3 Installation Manual No. RMD-00150-PS Revsion B, Dated 11/1/07 N/A 8/14/08

FAA APPROVED:

Gregory J. Michalik, Senior Aerospace Engineer Airframe & Administrative Branch Chicago Aircraft Certification Office

Amended: 4/28/85, 11/5/85, 5/15/86, 5/23/03, 2/20/07, 10/18/07, 8/14/08

Original signed by:

Gregory J. Michalik

### SA1401NW.pdf

United States of America Department of Transportation -- Federal Aviation Administration Supplemental Type Certificate

_____________________________________________________________________________________________________________________________________ Any alteration of this certificate is punishable by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or both.

_____________________________________________________________________________________________________________________________________ FAA FORM 8110-2(10-68) PAGE 1 of 2 PAGES T his certificate may be transferred in accordance with FAR 21.47.

Number SA1401NW This certificate issued to

certifies that the change in the type design for the following product with the limitations and conditions therefor as specified hereon meets the airworthiness requirements of Part * of the * Regulations. *

Original Product--Type Certificate Number : *

Description of Type Design Change:

Installation of fiberglass wing tips with recognition lights in accordance with Knots 2U, Ltd Installation Instructions as listed on AML SA1401NW, amended August 14, 2008, or later FAA approved revision.

Limitations and Conditions:

1. The installer must determine whether this design change is compatible with previously approved modifications. 2. A copy of this Certificate and FAA Approved Model List (AML) No. SA1401NW, amended August 14, 2008, or later FAA approved revisions, must be maintained as part of the permanent records for the modified aircraft. 3. The fiberglass wing tips with recognition lights are to be inspected and maintained in accordance with Knots 2U, Ltd Installation Instructions as listed on AML No. SA1401NW, amended August 14, 2008, or later FAA approved revisions. 4. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

This certificate and the supporting data which is the basis for approval shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Knots 2U Ltd 703 Airport Road Burlington, WI 53105 * (see attached FAA Approved Model Make : * List (AML) No. SA1401NW for list of Model : * Approved models and applicable airworthiness regulations)

Date of application : April 08, 1981

Date of issuance : September 02, 1981

Date reissued : 7/2/03; 2/20/07; 10/18/07

Date amended : 11/5/82; 4/10/85; 5/23/03; 7/2/03; 2/20/07;

10/18/07; 8/14/08

By direction of the Administrator

_______________________________________________________ ( Signature) Gregory J. Michalik, Senior Aerospace Engineer Airframe & Administrative Branch Chicago Aircraft Certification Office _______________________________________________________ ( Title)

Original signed by:

Gregory J. Michalik

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

___________________________________________________________________________________________________________________________________ Any alteration of this certificate is punishable by a fine of not exceeding $1,000, or imprisonment not exceeding 3 years, or both.

___________________________________________________________________________________________________________________________________ FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES This certificate may be transferred in accordance with FAR 21.47.

Number

## Every issue (3)

- August 14, 2008: Amended, Current. [certificate](https://openairdocs.org/files/sha256/e4/31/e4312d54bc1afc36e3895a0f7dd37dc38a3a9003b6cf1855b65e33d38cb2a233), [SA1401NW.pdf](https://openairdocs.org/files/sha256/0f/08/0f08d96bce072b7763739e0b904d71248118697deb8f2178348ba24e7b9ed67a)
- October 18, 2007: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/00/ec/00ec2740e378407ae1ca9fabb53d061433317441b03605368b1494ee5bb0c84a), [Sa1401nw.pdf](https://openairdocs.org/files/sha256/ae/b5/aeb523259edb4308c622b4e8611dc75292c34e8131fda8d0d6bbb65f6cd275ef)
- February 20, 2007: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/b4/e0/b4e014f1b5179e5f994187d53de91d7f3d27961c6dca8c27c1e079c71ca1e94c), [SA1401NW_AML.pdf](https://openairdocs.org/files/sha256/02/7c/027c281a0e9c8877fab1203f15c5977ec6e2064bf99730f6d7bd71398589ceeb)

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