# STC SA3312NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aviation Technical Services, United States
- Description: Installation of a cart stowage unit.
- Applied: August 5, 1985
- Status date: October 24, 2018
- Product: Aircraft, Large Airplane
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A22WE](https://openairdocs.org/tcds/A22WE)
- Certificate PDF: https://openairdocs.org/files/sha256/72/d9/72d920fff23f2b6b2be477338b587bdee25653fe621cda39cd82abf2979323cc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F212A7520884519986258335004C079A.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3312NM

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company DC-10-30 ([TCDS A22WE](https://openairdocs.org/tcds/A22WE))

## 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.

Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate

Number SA3312NM

This certificate, issued to Aviation Technical Services 3121 109th Street SW Everett, WA 98204-3500

Part 25 of the Federal Aviation Regulations. (See Type Certification Data Sheet A22WE for complete certification basis.)

Original ProductType Certificate Number: A22WE Make: McDonnell Douglas Model: DC-10-30

Description of the Type Design Change: Installation of a Cart Stowage Unit in accordance with FAA approved TRAMCO Drawing Number 85-030, Sheet 1, Revision C, dated December 24, 1985; Sheet 2, Revision D, dated December 26, 1985; and Sheet 3, Revision C, dated December 26, 1985 or later FAA approved revisions.

Limitations and Conditions: The approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. The resulting interior arrangement, along with the required placarding and the carts assoc iated with the Cart Stowage Unit, have not been evaluated and are not part of this STC. A copy of this Certificate and FAA approved TRAMCO Drawing No. 85-030 Sheets 1, 2 and 3 shall be maintained as part of the permanent records for the modified aircraft.

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.

Date of application: August 5, 1985 Date reissued: April 12, 2002, October 24, 2018 Date of issuance: January 14, 1986 Date amended:

FAA FORM 8110-2 (5/14) PAGE 1 OF 2 PAGES By direction of the Administrator

(Signature)

Manager, Seattle ACO Branch (Title)

## Every issue (2)

- October 24, 2018: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/72/d9/72d920fff23f2b6b2be477338b587bdee25653fe621cda39cd82abf2979323cc)
- April 12, 2002: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/22/0d/220dcfecf5b08102a45d026a2bb621cba66b101843ea46cd04e6d61f9d8ce37c)

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