# STC SA330NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: R-S Sales Inc., United States
- Description: Installation of automatic flagman model no 4
- Applied: October 22, 1975
- Status date: August 27, 2001
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A10WE](https://openairdocs.org/tcds/A10WE), [TCDS A26WE](https://openairdocs.org/tcds/A26WE)
- Certificate PDF: https://openairdocs.org/files/sha256/0b/58/0b589b1d4b5c819c01d0ccab4073e1ad9763df55c4c8cba9879b81c247268ed3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2B2932099DAE501A86257A2C004F5555.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA330NW

## ADs that name it (0)

None.

## Approved models (6)

- Weatherly Aircraft Company 201B ([TCDS A10WE](https://openairdocs.org/tcds/A10WE))
- Weatherly Aircraft Company 201C ([TCDS A10WE](https://openairdocs.org/tcds/A10WE))
- Weatherly Aircraft Company 620 ([TCDS A26WE](https://openairdocs.org/tcds/A26WE))
- Weatherly Aircraft Company 620A ([TCDS A26WE](https://openairdocs.org/tcds/A26WE))
- Weatherly Aircraft Company 620B ([TCDS A26WE](https://openairdocs.org/tcds/A26WE))
- Weatherly Aircraft Company 620TP ([TCDS A26WE](https://openairdocs.org/tcds/A26WE))

## 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 SA330NW

This certificate, issued to R-S Sales, Inc.

170 O’Connor Road Lewiston, ID 83501 Part 8 of the Civil Air Regulations, and FAR 21.25(a).

Original ProductType Certificate Number: A10WE A26WE Make: Weatherly Weatherly Model: 201B, 201C 620, 620A, 620TP, 620B (Restricted Category)

Description of the Type Design Change: Installation of Automatic Flagman Model No. 4, in accordance with Drawing No. 105, Revision 6, dated July 9, 1991, Drawing No. 111, Revision 4, dated February 24, 1993, Drawing No. 128, Revision 3, dated February 24, 1993, or later FAA approved revisions, and Automatic Flagman Installation Instructions as revised February 17, 1993, or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies to the above model aircraft only.

This approval should not be extended to other aircraft of these models 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.

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.

Date of application: October 22, 1975 Date reissued: 07/03/80; 04/02/86; 08/27/01 Date of issuance: October 20, 1976 Date amended: 07/03/80; 08/02/93; 08/18/93;

08/27/01

(Signature) Acting Manager, Seattle Aircraft Certification Office (Title)

## Every issue (1)

- August 27, 2001: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/0b/58/0b589b1d4b5c819c01d0ccab4073e1ad9763df55c4c8cba9879b81c247268ed3)

---
From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.