# STC SA4770NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Safran Cabin Inc., United States - Description: Installation of a Modular Lavatory(Retrofit Installation). - Applied: August 5, 1988 - Status date: July 18, 2025 - Product: Aircraft, Large Airplane - Certification basis: Part 25 - Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE) - Certificate PDF: https://openairdocs.org/files/sha256/08/c7/08c7503e132f3179f65f5ea66d5594f6b22a5593bffe000bdd6b370130c5e2c4 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164437201520251211153106.0001 - DRS record last changed: December 19, 2025 - Page: https://openairdocs.org/stc/SA4770NM ## ADs that name it (0) None. ## Approved models (3) - The Boeing Company DC-9-81 (MD-81) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE)) - The Boeing Company DC-9-82 (MD-82) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE)) - The Boeing Company DC-9-83 (MD-83) ([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: SA4770NM This certificate issued to: Safran Cabin Inc. 7330 Lincoln Way Garden Grove, CA 92841 Part 25 of Title 14, Code of Federal Regulations Original Product Type Certificate Number: AGWE Make: Boeing (McDonnell Douglas) Description of Type Design Change: Model: DC-9-81, DC-9-82, DC-9-83 Installation of a Modular Lavatory (Retrofit Installation) in accordance with Heath Tecna, Inc., Drawing List HPD-DL-38, Revision "New", dated May 19, 1989, or later FAA approved revision. Approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated, unless it is determined that the relationship between this change and any of those previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. The resulting interior arrangement, along with the required placarding has not been evaluated and is not part of this STC. A copy of this certification must 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: 08/05/1988 Date Reissued: 06/01/1996 07/20/2000 02/18/2005 Date of Issuance: 11/22/1989 Date Amended: A see continuation sheet for additional dates By Direction of the Administrator Signature: Bral G. Chitin Title: ODA Administrator, ODA-606394-NM United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA4770NM Effective Date: 07/18/2025 From (Name and address of grantor); United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA4770NM Effective Date: 07/18/2025 Date Reissued: - cont.: 10/09/2020; 08/20/2021; 07/18/2025 ---END--- ## Every issue (3) - July 18, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/08/c7/08c7503e132f3179f65f5ea66d5594f6b22a5593bffe000bdd6b370130c5e2c4) - October 9, 2020: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/16/a6/16a69f5e88b704fe56823a5f616e14ade0efdc7aebffd2ac74fb6ec9949dc82a) - February 18, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/f1/bf/f1bfba6093688b82d1f1425c8a30e2a82a88d8b83b74de6f5aa389697ff0d342) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.