# STC SA3120SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: RT Aerospace Corp, United States
- Description: Installation of an all tourist class interior reconfiguration of 110 passenger seats.
- Applied: September 9, 1991
- Status date: June 24, 2008
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/c5/4b/c54b66549268a48dc330e480aaddcce7a7f0e0eb092ed7dcf9c1e0114c2675ea
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4334BB84C634E4AE86257480007AB83F.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3120SO

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-9-30 Series ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA312050 This certificate issued to: R. I. Aerospace Corporation P. O. Box 170938 ERED Hialeah, FL 33017 Part 40 Regulations.

Original Product - Type bertificate Numben: A6WE Make: McDonnell Model: DC - 9-30 Description of Type Design Change: Instal: of an arist class interior reconfiguration of 110 passenger seats ordanc with R.T. Aerospace Corporation Drawing No. RT-DC92500.4091 Apri 1991, or later FAA approved revision.

oval should not be extended to other previously approved modifications are d by the installer that the interrelationship those other previously approved modifications will the airworthiness of that airplane. This deterderation of significant changes in weight distribution the fixed disposable weight in the fuselage.

ked, or a termination date is otherwise established by the Administrator if the Federal Aviatio Administration. STC Surrender processed:

Date of Application: July 31, 1991 Sute missued : Approval by: Melvin Taylor, ATL ACO Manager Mid Can for Date of Issuance: September 9, 1991 Date Amended: Make: 24 Jure 2058 FEDERAL AVIATION By direction inistrates Taal Ocom VOMINISTRATO John Tigue Manager, Atlanta Aircraft Certificatiorioffice

47.

## Every issue (1)

- June 24, 2008: Issued, Current. [certificate](https://openairdocs.org/files/sha256/c5/4b/c54b66549268a48dc330e480aaddcce7a7f0e0eb092ed7dcf9c1e0114c2675ea)

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