# STC SA1751WE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Atlantic Coast Sea Planes LLC, United States
- Description: Increase in main fuel tank capacity to 336 gallons.
- Applied: July 17, 1968
- Status date: March 7, 2008
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 4A24](https://openairdocs.org/tcds/4A24)
- Certificate PDF: https://openairdocs.org/files/sha256/f9/88/f988c4308265af4ccc2902491d0c6a19ca1f10a853c5344bb5eb9c4a80c2d30c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EAC360263022CDAF86257426007DDF80.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1751WE

## ADs that name it (0)

None.

## Approved models (1)

- McKinnon A. G. G-21C ([TCDS 4A24](https://openairdocs.org/tcds/4A24))

## 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 SA1751WE

This certificate, issued to Atlantic Coast Seaplanes LLC 3623 N. Elm Street, Suite 200 P. 0. Box 41027 Greensboro, NC 27455

Aeronautical Bulletin 7A..

Original Product⎯Type Certificate Number: 654 Make: McKinnon Model: G-21C

Description of the Type Design Change: Increase in main fuel tank capacity to 336 gallons with McKinnon enterprises Drawings MPD-6211, Rev. A, and MPD-9328, N.C. and E.O.s 1 through 3 to Drawing MPD-9328.

Limitations and Conditions: Eligible only on G-21C airplanes that have been previously modified to incorporate United Aircraft of Canada Ltd., PT6A-20 engines in accordance with STC No. SA1320WE. FAA Approved McKinnon Enterprises Airplane Flight Manual dated April 22, 1968, and revised July 23, 1968, is required with this modification

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 relationship between this change and any 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: July 17, 1968 Date reissued: 06/06/84; 09/04/98; 05/05/00; 09/27/07 Date of issuance: July 23, 1968 Date amended: 03/07/08

(Signature)

Acting Manager, Seattle Aircraft Certification Office (Title)

## Every issue (2)

- March 7, 2008: Amended, Current. [certificate](https://openairdocs.org/files/sha256/f9/88/f988c4308265af4ccc2902491d0c6a19ca1f10a853c5344bb5eb9c4a80c2d30c)
- September 27, 2007: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/b8/0f/b80f0c653c61b92eec367eb2901976be08d87442c341ecf23d7ac1da600784e1)

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