STC SA411NW

Supplemental type certificate · Knots 2U Ltd.

Holder
Knots 2U Ltd. · United States
Status
Current · Reissued
Status date
October 9, 2015
Applied
November 24, 1976
Product
Aircraft · Large Airplane
Certification basis
Part 21
Data sheet
TCDSA2SW

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 5, 2025.

What it approves

Installation of forward facing white lights, position lights, clear plastic covers, and associated systems.

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.

Number SA411NW

This certificate, issued to KNOTS 2U, LTD 709 Airport Road Burlington, WI 53105

Part 4b of the Civil Air Regulation,. Effective December 31, 1953 Original ProductType Certificate Number: A2SW Make: Aero Commander Model: 1121 A and B

Description of the Type Design Change: Installation of forward facing white lights, position lights, clear plastic covers, and associated systems in accordance with R. M. DeBorde Installation Instructions, Kit No. R.M.D.

00123-A.

Limitations and Conditions: Approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft 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 previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate must be maintained as part of the permanent records for the modified aircraft.

Date of application: November 24, 1976 Date reissued: August 26, 1991; October 9, 2015 Date of issuance: February 25, 1977 Date amended: July 15, 1977

(Signature)

Manager, Seattle Aircraft Certification Office (Title)

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 · 2

MakeModelData sheet
Israel Aircraft Industries Ltd.1121AA2SW
Israel Aircraft Industries Ltd.1121BA2SW

Every issue · 2

DRS keeps each issue of an STC as its own record, with its own certificate and attachments.

DateStatusFiles
October 9, 2015Reissued, currentCertificate
August 26, 1991Reissued, earlier issueCertificate