# STC SA00734LA

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aerospace Welding Minneapolis Inc., United States
- Description: Installation of modified exhaust system.  S/N 27-2505 and up
- Applied: August 31, 1998
- Status date: November 17, 2023
- Product: Aircraft, Small Airplane
- Data sheets: [TCDS 1A10](https://openairdocs.org/tcds/1A10)
- Certificate PDF: https://openairdocs.org/files/sha256/cf/17/cf1796e0b0ca133d00211920ce83a05330ceb73c11b9e91f617021282e78fd8b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID192281916120240214142557.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA00734LA

## ADs that name it (0)

None.

## Approved models (1)

- The New Piper Aircraft Inc. PA-23-250 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))

## 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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3344 Highway 149 Eagan, MN 55121 3* Civil Air Regulations *Certification basis is set forth in Type Certificate Data Sheet 1A10 Piper PA-23-250 (S/N 27-2505 and up) Installation of a modified exhaust system in accordance with Knisley Welding, Inc. Manufacturing Drawing List #5, Revision NC, dated January 27, 1999, 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 will introduce no advese 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.

August 31, 1998 November 17, 2023 February 19, 1999 for Manager, West Certification Branch 3

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((QG SA00734LA Limitations and Conditions (Continued):

NOTE 1: This modification requires Lycoming alternator bracket P/N 77756 and Lycoming swing arm P/N 75380.

NOTE 2: Noise characteristics: This modification is not considered an "acoustical change" as defined in § 21.93(b), Amendment 21-75 of the Federal Aviation Regulations.

## Every issue (1)

- November 17, 2023: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/cf/17/cf1796e0b0ca133d00211920ce83a05330ceb73c11b9e91f617021282e78fd8b)

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