# STC SA00633DE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: K. W. Aviation Inc., United States
- Description: Installation of Leading Edge Exhaust System
- Applied: August 3, 2006
- Status date: June 14, 2007
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1A4](https://openairdocs.org/tcds/1A4), [TCDS 1A6](https://openairdocs.org/tcds/1A6)
- Certificate PDF: https://openairdocs.org/files/sha256/41/8f/418f619d16372cf06ed754f691fe7fcaab5d2d2559bf9b2e09cc2609d54a0a77
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A9EC72BE227C06C08625745D0068FB95.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA00633DE

## ADs that name it (0)

None.

## Approved models (4)

- The New Piper Aircraft Inc. PA-20 ([TCDS 1A4](https://openairdocs.org/tcds/1A4))
- The New Piper Aircraft Inc. PA-22 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- The New Piper Aircraft Inc. PA-22-150 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))
- The New Piper Aircraft Inc. PA-22-160 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))

## 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: SA00633DE This certificate issued to: K.W. Aviation, Inc.

4221 Airport Rd.

Ogden, Utah 84405 Certifies that the change in the type design for the following product with the limitation's and condition's therefore as specified hereon meet's the airworthiness requirement's of Part * of the * Regulations.

Original Product - Type Certificate Number : *See FAA Approved Model List (AML), Make: Document No. AML-SA00633DE Rev. -, or later FAA approved revisions for the list of Model: approved airplane models, applicable installation data requirements and specific limitations.

Installation of Leading Edge Exhaust System in accordance with K.W. Aviation Document Number KWAPA-20EXH-INST-2, Exhaust System Installation Instructions, Rev. N/C, dated 4/26/2006 and FAA approved 6/14/07 or later FAA approved revision.

1. Installer must determine compatibility of this design change with previously approved modifications.

2. 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.

3. Refer to K.W. Aviation Document Number KWAPA-20EXH-INST-1, Exhaust System Maintenance Instructions, Rev. N/C, dated 4/26/2006 for Instructions for Continued Airworthiness.

AML-SA00633DE FOR STC SA00633DE Installation of Leading Edge Exhaust System Rev. - Original Type Certification Basis AML Amendment Item Make Model Type Certificate Number: for Alteration Date Piper Aircraft, Inc. PA-20 with Lycoming O-320 1A4 CAR 3' (150hp, 160hp) installed per appropriate STC.

2 Piper Aircraft, Inc. PA-20 with Lycoming O-360 1A4 CAR 3' installed per appropriate STC.

3 Piper Aircraft, Inc. PA-22-150 1A6 CAR 32 PA-22-160 Piper Aircraft, Inc. PA-22 with Lycoming O-360 1A6 CAR 32 installed per appropriate STC.

' Certification Basis is set forth in Type Certificate Data Sheet 1A4 2 Certification Basis is set forth in Type Certificate Data Sheet 146 FAA Approved:

Stephen George Small Airplane Program Manager Make: June 14, 2007 Revised Dates:

## Every issue (1)

- June 14, 2007: Issued, Current. [certificate](https://openairdocs.org/files/sha256/41/8f/418f619d16372cf06ed754f691fe7fcaab5d2d2559bf9b2e09cc2609d54a0a77)

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