# STC SA2-193

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Signature Flight Support Corporation, United States
- Description: Rework exhaust system.
- Applied: May 17, 1957
- Status date: August 31, 2000
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-669](https://openairdocs.org/tcds/A-669)
- Certificate PDF: https://openairdocs.org/files/sha256/16/39/1639e6859bcc9184f1cd41f322848f9ac4ce98120eada3031128e9d48f175bca
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F4AE33A50126B11A85256CC10083D451.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2-193

## ADs that name it (0)

None.

## Approved models (10)

- The Boeing Company DC3A-S1C3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-S1CG ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-S4C4G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-SC3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3A-SCG ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-R-1830-90C ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-S1C3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-S4C4G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3C-SC3G ([TCDS A-669](https://openairdocs.org/tcds/A-669))
- The Boeing Company DC3D-R-1830-90C ([TCDS A-669](https://openairdocs.org/tcds/A-669))

## 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: SA2-193 This certificate issued to: Signature Flight Support Corporation, a Delaware Corporation 7511 Lemmon Avenue, Hangar C Dallas, TX 75209 Certifies that the change in the type design for the following product with the limitutions and conditions therefor as speoified hereon meets the airoorthiness requirement's of Part of the Roegulations. Aero Bulletin 7A of the Bureau of Air Commerce Original Product Type Certificate Number : 669 Make: McDonnell Douglas Model: DC-3 Description of Type Design Change:

Rework exhaust system in accordance with data listed on Dallas Aero Service Drawing List titled "Rework Exhaust System DC-3" dated June 3, 1957.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

Date of Application: May 17, 1957 Date Reissued: 6/1/92; 12/21/98; 8/31/00 Date of Issuance: August 06, 1957 Date Amended: Apri1 19, 1982 Rev. 5 FEDERAL •ALIA TON By Direction of the Administrator Alon (Signature) S. Frances Cox TOMNISTRATO Manager, Special Certification Office, Southwest Region (Title)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP code ) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP code) Extent of Authority (if licensing agreement): - Date of Transfer:

Signature of grantor (In ink):

**FAA AC 69-5536**

## Every issue (1)

- August 31, 2000: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/16/39/1639e6859bcc9184f1cd41f322848f9ac4ce98120eada3031128e9d48f175bca)

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