# STC SA2704NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Heliarc Welding Service Inc., United States
- Description: Installation of replacement exhaust system riser.
- Applied: January 28, 1985
- Status date: March 28, 1985
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A16CE](https://openairdocs.org/tcds/A16CE)
- Certificate PDF: https://openairdocs.org/files/sha256/01/d3/01d3e0d22fd3e2795c9cb43a7d41d9ca4c768e2bc2be757875bf230c986c2598
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/5D5FA2911A8A0D6685256CC20008C7A3.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2704NM

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company T207 ([TCDS A16CE](https://openairdocs.org/tcds/A16CE))
- Cessna Aircraft Company T207A ([TCDS A16CE](https://openairdocs.org/tcds/A16CE))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

A1244NMD-S United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA2704NM This certificate issued to: Heliarc Welding Service, Inc.

P.O. BOx 38509 3965 Newport Street Denver, Colorado 80238 Purt 3 of the CIVil Air Regulations.

Original Product - Type Certificate Number: A16CE Make: Cessna Model: T207 T207A Tripliat Type Dancehang exhaust system riser in accordance with FAA sealed Heliarc-Welding Service Top Drawing HWS-206210-4 dated November 7, 1984; FAA approved March 26, 1985; or subsequent approved revisions.

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 interrelationship between this change and any other previously approved modifications will introduce no adverse effect upon the airworthiness of the aircraft.

Date of Application: January 28, 1985 Date Reissued:

Date of Issuance: March 28, 1985 Date Amended:

EDERAL AVIATION Particles of the ten in sender Manly Wi Welles welles, (Signalure) Acting Manager TOMNISTRAIO Northwest Mountain Region, Aurora, Colorado Denver Aircraft Certification Office (Title )

## Every issue (1)

- March 28, 1985: Issued, Current. [certificate](https://openairdocs.org/files/sha256/01/d3/01d3e0d22fd3e2795c9cb43a7d41d9ca4c768e2bc2be757875bf230c986c2598)

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