# STC SA9207SC-D - Type: Supplemental type certificate - Status: Current, Amended - Holder: L-3 Communications Integrated Systems LP, United States - Description: Modification of an Audio Frequency (A.F.) Switch and upgrade of four (4) non-secure telephones - Applied: August 18, 2005 - Status date: March 22, 2013 - Product: Aircraft, Large Airplane - Certification basis: Part 21, Part 25, Part 121, Part 129 - Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE) - Certificate PDF: https://openairdocs.org/files/sha256/20/02/2002a1412d7603407f12da3cf4bd459e2971713a0f8d30bf62ce23d5e87e37cd - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/91E82BA8B7802DA286257B4B004CE7D6.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA9207SC-D ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company DC-9-32 (VC-9C) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE)) ## 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 SA9207SC-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: A6WE *SEE PAGE 3 Make : McDonnell Douglas Model : DC-9-32 (VC-9C) Description of Type Design Change: Modification of an Audio Frequency (A.F.) Switch and upgrade of four (4) nonsecure telephones in accordance with (1) L-3 Communications Integrated Systems Sealed Drawing List SDL 6165-1, Revision NC dated 24 August 2005 and (2) L-3 Communications IS, “Instructions for Continued Airworthiness for C-9C A.F. Switch and Telephone Upgrade,” dated 22 August 2005, or later FAA approved revisions of (1) or (2). Date of application: 18 August 2005 Date reissued : Date of issuance : 25 August 2005 Date amended : 22 March 2013 – Amdt 1 By direction of the Administrator (Signature) Michael E. Hopper ODA-750173-SW Administrator, Alternate (Title) 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): FAA Form 8110-2-1(10-69) Page 3 of 3 Number SA9207SC-D Amendment 1 Date of Issuance: 22 March 2013 Limitations and Conditions: (Continued) 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. 4. Based on 14 CFR §§ 21.115 and 21.101, the certification basis for the McDonnell Douglas DC-9-32 aircraft is as follows: a. The type certification basis for McDonnell Douglas DC-9-32 series airplanes is shown on TCDS A6WE for parts not changed or not affected by the change. b. The certification basis for parts changed or aff ected by the change since the reference date of application, 18 August 2005, is as shown in TCDS A6WE with the following additional 14 CFR §§ 25 paragraphs: 25.981(a)(3) amendment 102 and 25.1529 amendment 54. 5. When installed, airplanes with this STC are limited to operations excluding those of an Air Carrier. Specifically, no operations under 14 CFR 121, 14 CFR 129 or any foreign Air Carrier are permitted. --------------------------------------------------END---------------------------------------------- ## Every issue (1) - March 22, 2013: Amended, Current. [certificate](https://openairdocs.org/files/sha256/20/02/2002a1412d7603407f12da3cf4bd459e2971713a0f8d30bf62ce23d5e87e37cd) --- 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.