# STC SA109RM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Heliarc Welding Service Inc.
- Description: Modify exhaust stacks by replacing existing bellows or seal type joints with a clampless sealess type slip joint.
- Status date: December 14, 1977
- Data sheets: A7CE, A7CE, A7CE, A7CE, A7CE, A7CE
- Certificate PDF: https://openairdocs.org/files/sha256/0b/d9/0bd938dd789f1ff77de535d5c552f71a0701ea93594440c5c2e37b0d4e1126f1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/62A535617334553785256CC10080DDEB.0001
- Page: https://openairdocs.org/stc/SA109RM

## ADs that name it

None.

## Approved models (6)

- Cessna Aircraft Company 401 (TCDS A7CE)
- Cessna Aircraft Company 401A (TCDS A7CE)
- Cessna Aircraft Company 402 (TCDS A7CE)
- Cessna Aircraft Company 402A (TCDS A7CE)
- Cessna Aircraft Company 402B (TCDS A7CE)
- Cessna Aircraft Company 414 (TCDS A7CE)

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- December 14, 1977: Issued, Current. [certificate](https://openairdocs.org/files/sha256/0b/d9/0bd938dd789f1ff77de535d5c552f71a0701ea93594440c5c2e37b0d4e1126f1)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.