# STC SA3170SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Honeywell International Inc, United States
- Description: Installation of the CAS-81 TCAS II system and dual TRA-67 Mode S transponders.
- Applied: January 10, 1992
- Status date: January 12, 2022
- Product: Aircraft, Large Airplane
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A20EU](https://openairdocs.org/tcds/A20EU)
- Certificate PDF: https://openairdocs.org/files/sha256/c8/13/c8132e3003e82687f0d46fa201f39c51a54d7b6946c674d00f4425c48dadbd87
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DB5B1DB8A0BBB705862587E300550099.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3170SO

## ADs that name it (0)

None.

## Approved models (2)

- Fokker Services F.28 Mark 1000 ([TCDS A20EU](https://openairdocs.org/tcds/A20EU))
- Fokker Services F.28 Mark 4000 ([TCDS A20EU](https://openairdocs.org/tcds/A20EU))

## 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.

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___

## Every issue (1)

- January 12, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/c8/13/c8132e3003e82687f0d46fa201f39c51a54d7b6946c674d00f4425c48dadbd87)

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