# STC SA3732WE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aerospace Welding Minneapolis Inc., United States
- Description: Installation of Knisley mufflers in lieu of original Cessna mufflers.
- Applied: May 24, 1978
- Status date: November 17, 2023
- Product: Aircraft, Small Airplane
- Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21)
- Certificate PDF: https://openairdocs.org/files/sha256/df/27/df27fccc265b44913b9bec255d8eb6697b8833d97ef0a019abb808291797f90a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161002008520240214145322.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3732WE

## ADs that name it (0)

None.

## Approved models (2)

- The Cessna Aircraft Company 210 ([TCDS 3A21](https://openairdocs.org/tcds/3A21))
- The Cessna Aircraft Company 210A ([TCDS 3A21](https://openairdocs.org/tcds/3A21))

## 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.

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Original Product 7\SH&HUWLILFDWH1XPEHU Make:

SA3732WE Aerospace Welding Minneapolis, Inc.

3344 Highway 149 Eagan, MN 55121 Part 3 Civil Air Regulations dated May 15, 1956 3A21 Cessna 210, 210A Installation of Knisley Welding, Inc. mufflers in lieu of original Cessna mufflers. No installation data required.

Parts manufactured in accordance with FAA Sealed Knisley Drawings K1250200-3 dated May 23, 1978, or later FAA Approved revision, and K1250251-16 dated May, 22, 1978, or later FAA Approved revision.

Approval of this change in type design applies to the above aircraft model(s) only. This approval should not be extended to 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 other previously approved modifications, including changes in type design, will introduce no advese effect upon the airworthiness of that 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.

August 30, 1977 November 17, 2023 November 11, 1977 for Manager, West Certification Branch 2

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Too (Name and address of transferee):

Date oI transfer:

SA3732WE 2

## Every issue (2)

- November 17, 2023: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/df/27/df27fccc265b44913b9bec255d8eb6697b8833d97ef0a019abb808291797f90a)
- October 5, 2023: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/64/f2/64f28280203fbebf4ac0dc50a7087bf9e43bf3e534dfef7d694e69cb1158a3b5)

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