STC SA1373CE

Supplemental type certificate · Knots 2U Ltd.

Holder
Knots 2U Ltd. · United States
Status
Current · Reissued
Status date
May 24, 2021
Applied
April 21, 1977
Product
Aircraft · Small Airplane
Certification basis
Part 3, Part 21
Data sheet
TCDS2A13

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Install third window. (PA-28-180 S/N 28-1 THRU 28-4377, PA-28-235 S/N 28-10003 THRU 28-11039)

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate FAA Form 8110-2 (5/14) Page 1 of 3

Knots2U, Ltd.

Number: SA1373CE 709 Airport Road Burlington, WI 53105

Part 3* of the Civil Air Regulations.

Original Product – Type Certificate Number: Make: Piper Model:

2A13 PA-28-140, PA-28-150, PA-28-160, PA-28-180, PA-28-235

Installation of a Third Window in accordance with:

1. Drawing List No. 28200, stamped "FAA Approved" and dated September 15, 1977, or later FAA Approved revision.

1. This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. (Continued on page 3.)

Date of Application: April 21, 1977

Date Reissued: May 24, 2021

Date of Issuance: September 16, 1977 Date Amended: November 17, 1977

Signature

Title Charlene Combs Program Manager Wichita ACO Branch

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate FAA Form 8110-2 (5/14) Page 2 of 3

To (Name and address of transferee)

From (Name and address of grantor)

SA1373CE

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

(Continuation Sheet) Number: SA1373CE

Reissue Date: May 24, 2021

Airworthiness requirements (*continued from page 1):

Effective May 15, 1956, plus the amendments listed on Type Certificate Data Sheet 2A13.

Limitations and Conditions (continued from page 1):

2. Parts manufactured under this STC may have been produced without an FAA approved quality control procedure. Prior to installation, such parts must be inspected for conformity and airworthiness in accordance with FAR's 21 and 43.

Model S/N Eligibility:

PA-28-180: 28-1 thru 28-4377 PA-28-235: 28-10003 thru 28-11039

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 5

MakeModelData sheet
The New Piper Aircraft Inc.PA-28-1402A13
The New Piper Aircraft Inc.PA-28-1502A13
The New Piper Aircraft Inc.PA-28-1602A13
The New Piper Aircraft Inc.PA-28-1802A13
The New Piper Aircraft Inc.PA-28-2352A13