# STC SA3RM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Heliarc Welding Svc Inc
- Description: Modification of engine exhaust stacks by replacement of expansion joint with slip fit joint.
- Status date: October 1, 1973
- Data sheets: 3A10, 3A10, 3A10, 3A25, 3A25, 3A25, 3A25, 3A25, 3A25, 3A25, 3A25, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE, A7CE
- Certificate PDF: https://openairdocs.org/files/sha256/09/03/09036f81918eb62902b381de6eb0c970f9531bc90d87c6ed8f43e6d17a146c37
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A6FE470B7D04998B85256CC2000C5C7C.0001
- Page: https://openairdocs.org/stc/SA3RM

## ADs that name it

None.

## Approved models (21)

- Cessna Aircraft Company 320 (TCDS 3A25)
- Cessna Aircraft Company 320A (TCDS 3A25)
- Cessna Aircraft Company 320B (TCDS 3A25)
- Cessna Aircraft Company 320C (TCDS 3A25)
- Cessna Aircraft Company 320D (TCDS 3A25)
- Cessna Aircraft Company 320E (TCDS 3A25)
- Cessna Aircraft Company 320F (TCDS 3A25)
- Cessna Aircraft Company 340 (TCDS 3A25)
- 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 411 (TCDS A7CE)
- Cessna Aircraft Company 411A (TCDS A7CE)
- Cessna Aircraft Company 414 (TCDS A7CE)
- Cessna Aircraft Company 421 (TCDS A7CE)
- Cessna Aircraft Company 421A (TCDS A7CE)
- Cessna Aircraft Company 421B (TCDS A7CE)
- Cessna Aircraft Company T310P (TCDS 3A10)
- Cessna Aircraft Company T310Q (TCDS 3A10)
- Cessna Aircraft Company T310R (TCDS 3A10)

## What the certificate says

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

## Every issue (1)

- October 1, 1973: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/09/03/09036f81918eb62902b381de6eb0c970f9531bc90d87c6ed8f43e6d17a146c37)

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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.