# STC SA537NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Kenmore Air Harbor LLC, United States
- Description: Installation of a Motorola model 12N55 alternator and Model R2-2 voltage regulator, Stewart Warner Model 240-D-12 priming pump (electric) and an EDO Float (hull) booster (scallop)
- Applied: July 29, 1977
- Status date: April 5, 2019
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-769](https://openairdocs.org/tcds/A-769)
- Certificate PDF: https://openairdocs.org/files/sha256/f6/75/f675146f95b3ffe4e594e434a3136fac0f1b39210f73d0bbd3d02443866ddcd7
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8B70CC3B51408ACA862585CE00548D20.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA537NW

## ADs that name it (0)

None.

## Approved models (1)

- Sky Enterprises Inc. RC-3 ([TCDS A-769](https://openairdocs.org/tcds/A-769))

## 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 SA537NW

This certificate, issued to Kenmore Air Harbor, LLC.

6321 NE 175th Street Kenmore, WA 98028

Part 3 of the Civil Air Regulations,effective November 13, 1945.

Original ProductType Certificate Number: A-769 Make: STOL (Republic) Model: RC-3 SeaBee

Description of the Type Design Change: Installation of a Motorola Model 12N55 alternator and Model R2-2 voltage regulator; Stewart Warner Model 240-D-12 priming pump (electric) and an EDO Float (hull) booster (scallop) in accordance with Kenmore Air Harbor, Inc. photos 1, 2, 3, and 4.

NOTE: Placard on pump switch: “FOR PRIME OR EMERGENCY ONLY”

Limitations and Conditions: Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Republic RC-3 SeaBee, Serial Number 989 only. A copy of this Certificate shall be maintained as part of the permanent records for th e modified aircraft.

Date of application: July 29, 1977 Date reissued: April 5, 2019 Date of issuance: October 21, 1977 Date amended:

FAA FORM 8110-2 (5/14) PAGE 1 OF 2 PAGES By direction of the Administrator

(Signature)

Acting Manager, Seattle ACO Branch (Title)

Transfer the ownership of Supplemental Type Certificate Number

to (Name of Transferee)

(Address of Transferee)

(Number and Street)

(City, State, and ZIP Code)

from (Name of Grantor) (Print or Type)

(Address of Grantor)

(Number and Street)

(City, State, and ZIP Code)

Signature of Grantor (In Ink):

U.S. GPO: 1987-763-289

## Every issue (2)

- April 5, 2019: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f6/75/f675146f95b3ffe4e594e434a3136fac0f1b39210f73d0bbd3d02443866ddcd7)
- October 21, 1977: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/5e/ec/5eecc5681d09ed95a92ff0d0b020b70670d42c919570a5ecbafb665512730dcf)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.