# STC SA5050SW-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: L-3 Communications Integrated Systems LP, United States - Description: Modification of existing gravity flow water system in order to convert to a pressurized system and the installation of floor pans at entrance doors - Applied: January 27, 1992 - Status date: July 29, 2002 - Product: Aircraft, Large Airplane - Certification basis: Part 21 - Data sheets: [TCDS 4A21](https://openairdocs.org/tcds/4A21) - Certificate PDF: https://openairdocs.org/files/sha256/8a/41/8a41ebdaf87680a63f1cbf6d540512e6faa3b0a4b878e83a431292d563ded9ce - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EEC7ED838F627DC785256CC200122650.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA5050SW-D ## ADs that name it (0) None. ## Approved models (2) - The Boeing Company 707-100B Long Body ([TCDS 4A21](https://openairdocs.org/tcds/4A21)) - The Boeing Company 707-100B Short Body ([TCDS 4A21](https://openairdocs.org/tcds/4A21)) ## 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. Number SA5050SW-D This Certificate issued to L-3 Communications Integrated Systems L.P. 10001 Jack Finney Blvd. Greenville, TX 75402 Part 4b of the Civil Air Regulations. Original Product Type Certificate Number: 4A21 Make : Boeing Model : 707-153B Description of Type Design Change: Modification of existing gravity flow water system in order to convert to a pressurized system and the installation of floor pans at entrance doors in accordance with E-Systems Sealed Drawing List SDL 7488-3, Rev. A dated 29 June 1992, or later FAA approved data. 1. Compatibility of this design change with previously approved modifications must be determined by the installer. 2. 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 : 27 January 1992 Date reissued : July 29, 2002 Date of issuance : 09 March 1992 Date amended : 24 July 1992 By direction of the Administrator (Signature) S. Frances Cox, Manager Special Certification Office, Southwest Region (Title) FAA Form 8110-2-1(10-69) Page 2 of 2 Number Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and Zip code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State and Zip code) Extent of Authority (if licensing agreement): Signature of grantor (In ink): ## Every issue (1) - July 29, 2002: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/8a/41/8a41ebdaf87680a63f1cbf6d540512e6faa3b0a4b878e83a431292d563ded9ce) --- 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.