# STC SA665NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Knots 2U Ltd., United States
- Description: Installation of forward facing white lights (100 watts) clear plastic wing tip tank nose cone, and associated systems
- Applied: August 5, 1978
- Status date: October 9, 2015
- Product: Aircraft, Small Airplane
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A8EA](https://openairdocs.org/tcds/A8EA), [TCDS A23SO](https://openairdocs.org/tcds/A23SO)
- Certificate PDF: https://openairdocs.org/files/sha256/25/9c/259c50e888edf434c9006a60c77455a2afdb1bc10924e5b03acfccf9ede9f09d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BEA476D04156937686257EDD0059A8A4.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA665NW

## ADs that name it (0)

None.

## Approved models (3)

- Piper Aircraft Inc. PA-31T ([TCDS A8EA](https://openairdocs.org/tcds/A8EA))
- Piper Aircraft Inc. PA-31T1 ([TCDS A8EA](https://openairdocs.org/tcds/A8EA))
- Piper Aircraft Inc. PA-42 ([TCDS A23SO](https://openairdocs.org/tcds/A23SO))

## 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 SA665NW

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

Part 3 of the Civil Air Regulation, May 15, 1956, and Federal Aviation Regulation 23, February 1, 1965. ** Original ProductType Certificate Number: A8EA ** A23SO Make: Piper PAC (Piper Aircraft Corp.)

Model: PA-31T, PA31T1 PA-42

Description of the Type Design Change: Installation of forward facing white lights (100 watts), clear plastic wing tip tank nose cone, and associated systems in accordance with R.M.D. Aircraft Lighting, Inc. Installation Instructions No.

**RMD-00130-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 relationship 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 must be maintained as part of the permanent records for the modified aircraft.

Date of application: August 5, 1978 Date reissued: February 24, 1981; October 9, 2015 Date of issuance: September 15, 1978 Date amended: August 25, 1980; February 24, 1981

(Signature)

Manager, Seattle Aircraft Certification Office (Title)

## Every issue (2)

- October 9, 2015: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/25/9c/259c50e888edf434c9006a60c77455a2afdb1bc10924e5b03acfccf9ede9f09d)
- February 24, 1981: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/53/11/5311e9c36743565b36af776109c41c83153e245d464207edf66bfca4fde7f1a8)

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