# STC SA5878SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: RAM Aircraft Limited Partnership, United States
- Description: Installation of range-marked EGT, CHT, oil temperature, and pressure gauges.
- Applied: October 17, 1984
- Status date: October 8, 2001
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE)
- Certificate PDF: https://openairdocs.org/files/sha256/65/48/654818b796331411777302e6dd0836707942a3687f96ec36d8d61a10eff5d31d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0A386781ED272E3985256CC200122C24.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA5878SW

## ADs that name it (0)

None.

## Approved models (4)

- Cessna Aircraft Company 421 ([TCDS A7CE](https://openairdocs.org/tcds/A7CE))
- Cessna Aircraft Company 421A ([TCDS A7CE](https://openairdocs.org/tcds/A7CE))
- Cessna Aircraft Company 421B ([TCDS A7CE](https://openairdocs.org/tcds/A7CE))
- Cessna Aircraft Company 421C ([TCDS A7CE](https://openairdocs.org/tcds/A7CE))

## 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.

Part 3 of the Civil Air R egulations.

Original Product Type Certificate N umber :

Installation of range-marked EGT, CHT, oil temperature, and pressure gauges in accordance with RAM Aircraft Corporation Drawing No. 1152 dated 1/16/85, or later FAA approved revision.

FAA Approved Airplane Flight Manual Supplement dated July 14, 1986, is required for Cessna Models 421, 421A, and 421B with Teledyne Continental GTSIO-520-D or –H engines; Supplement dated February 1, 1985, is required for Cessna Model 421C with Teledyne Continental GTSIO-520-N or –L engines.

Compatibility of this design change with previously approved modifications must be determined by the installer. 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.

RAM Aircraft, Limited Partnership 7505 Karl May Drive Waco, TX 76708 A7CE M ake : Cessna M odel : 421, 421A, 421B, 421C Date of a pplication : October 17, 1984

Date of issuance : February 01, 1985

Date reissued : October 08, 2001

Date amended : July 17, 1986 Revision 1

B y direction of the A dministrator

(Signature) S. Frances Cox, Manager Special Certification Office, Southwest Region

(Title)

FAA Form 8110-2-1(10-69) Page 2 of 2

Number SA5878SW Date of Issuance: February 01, 1985

## Every issue (1)

- October 8, 2001: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/65/48/654818b796331411777302e6dd0836707942a3687f96ec36d8d61a10eff5d31d)

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