# STC SA5659NM - Type: Supplemental type certificate - Status: Current, Amended - Holder: Flight Structures Inc, United States - Description: Installation of structural, electrical and mechanical systems provisions for Zone D and E lavatories. - Applied: May 2, 1991 - Status date: October 6, 1995 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE) - Certificate PDF: https://openairdocs.org/files/sha256/ce/f2/cef261a2275ba1e6609af19ad92c7cac734df2cb75b3c6afeda6588a22a0f5a8 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8A5CA5028D94EEAE85256CC200122A84.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA5659NM ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company 747-100 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. Writa Subsof Americ Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA5659NM This certificate issued to: FLIGHT STRUCTURES, INC. Part 25 of the Federal Aviation Pegulations. Original Product -Typo Certificato Number: A20WE Make: Boeing Model: 747-100 series Description of Type Design Change: Installation of structural, electrical and mechanical systems provisions for Zone D and E lavatories in acordance with FSI Master Drawing List No 91FS023-D01, Revision D, dated April 15, 1994, or later FAA approved revisions. This approval of this change in type design applies basically to the above model aircraft only and only to those aircraft serial numbers as listed on the continuation sheet. 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 of those other previously approved modifications, or changes in type design will introduce no adverse effect upon the airworthiness of the aircraft. The Zone D and E lavatories and the resulting interior arrangement, along with the required placarding have not been evaluated and are not part of the STC (see Continuation Sheet Page 3 of 3.) Date of Application: May 2, 1991 Date Reissued: Date of Issuance: December 31, 1991 Date Amended: October 6, 1995 By direction of the roam (Signature) Acting Manager, Seattle Aircraft Certification Office (Title) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA5659NM A copy of this Certificate and Flight Structures Master Drawing List 91FS023-D01, shall be maintained as part of the permanent records for the modified aircraft. Applicable serial numbers for the Boeing 747-100 series airplanes are as follows: 19875 19881/ 19928 19876 19882 20102 19877 19883 20103 19878 19925 20104 19879 19926 20105 19880 19927 20106 - END - **FAA FORM 8110-2-1 (10-69) PAGE 3 OF 3 PAGES** ## Every issue (1) - October 6, 1995: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ce/f2/cef261a2275ba1e6609af19ad92c7cac734df2cb75b3c6afeda6588a22a0f5a8) --- 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.