# STC SA3173SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Honeywell International Inc, United States
- Description: Installation of the Mark-VII ground proximity and windshear warning system.
- Applied: June 21, 1989
- Status date: January 12, 2022
- Product: Aircraft, Large Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/bb/c7/bbc7f03dfbab286d081920c6249eac77e5e3af8f170cc6c6218683ca3514c165
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/30380C8842C03CB2862587E300543BE2.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3173SO

## ADs that name it (0)

None.

## Approved models (7)

- The Boeing Company DC-9-31 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-32 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-32F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-33F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-34 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-34F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- The Boeing Company DC-9-41 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## 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 ___

Mode l Engine Model Hushkit Compat ibility Last Date Revised McDonnell- Douglas 2 Pratt & Whitney ABS STC SA1613G L - DC-9-31 , -32, -32F JT8D-9 ABX STC SA3846NM I DC-9-31, -32, -32F, -33F I JT8D-7 , -9 I ABS STC SA 1785GL DC-9-31, -32, -32F JT8D-7, -9, -15 DAC S.B. 71-21, dated 9/23/1981 or later approved ..

rev1s1ons I DC-9-33F I JT8D-9, -11 I ABX STC SA3846NM DC-9-33F JT8D-9, -15 DAC S.B. 71-21, dated 9/23/1981 or later approved ..

rev1s1ons DC-9-34, -34F JT8D-9, -11, -15 DAC S.B. 71-21, dated - 9/23/1981 or later approved ..

rev1s1ons I DC-9-41 I JT8D-9 I N/A I - DC-9-41 JT8D-11 , -15 DAC S.B. 71-21, dated - 9/23/1 981 or later approved revisions United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number:

End

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

## Every issue (2)

- January 12, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/bb/c7/bbc7f03dfbab286d081920c6249eac77e5e3af8f170cc6c6218683ca3514c165)
- April 5, 2001: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/f1/26/f1267d671ac09a9c5adb5423b09adbd33b2264a468fbdf922787622e37550fde)

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