# STC SA1421NM-S

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Kenmore Air EDO Floats LLC, United States
- Description: An increase in gross weight is approved from 3500 pounds to 3600 pounds when equipped with EDO Model 582-3430 seaplane floats.
- Applied: July 7, 1981
- Status date: July 31, 1998
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A4CE](https://openairdocs.org/tcds/A4CE)
- Certificate PDF: https://openairdocs.org/files/sha256/67/5e/675ebe9687644fa8b9dfb077feaa0a1c60624bedec26cdd0b7d29740b07fdd2a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6441E01B3C5B02BA86257A15004F38DF.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1421NM-S

## ADs that name it (0)

None.

## Approved models (6)

- Cessna Aircraft Company U206B ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206C ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206D ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206E ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206F ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))
- Cessna Aircraft Company U206G ([TCDS A4CE](https://openairdocs.org/tcds/A4CE))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA1421NM-S This certificate issued to: Kenmore Air EDO Floats L.L.C.

6321 NE 175TH Street Seattle, WA 98155-4898 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specified hereon meets the airworthiness requirement's of Part 3 of the Civil Air Regulations.

Original Product -Type Certificate Number: A4CE Make: Cessna Model: U206B, U206C, U206D, U206E, U206F, and U206G Description of Type Design Change: An increase in gross weight is approved from 3500 pounds to 3600 pounds when equipped with EDO Model 582-3430 seaplane floats, in accordance with EDO drawing 40520, Revision B, or latest FAA approved revisions.

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 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, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate and Addendum No. SA1421NM-S shall be maintained as part of the permanent records for the modified aircraft.

(See STC Continuation Sheet Page 2)

Date of Application: July 7, 1981 Date Reissued: 1/20/82, 8/20/82. 8/12/83, 4/16/97;

7/31/98 Date of Issuance: November 12, 1981 Date Amended: 7/31/98 FEDERAL P the stdminis rator lateran lor (Signature) TOMNIST RATION Acting Manager, Seattle Aircraft Certification Office (Title)

## Every issue (1)

- July 31, 1998: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/67/5e/675ebe9687644fa8b9dfb077feaa0a1c60624bedec26cdd0b7d29740b07fdd2a)

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