# STC SA9192SC-D - Type: Supplemental type certificate - Status: Current, Amended - Holder: L-3 Communications Integrated Systems LP, United States - Description: MCS HF ALE radio upgrade consisting of the replacement of four (4) existing ARC-207 HF radios with HF-121C HF ALE capable radios and the addition of a switch panel and a relay/switch box to the MCS console - Applied: January 27, 2003 - Status date: March 22, 2013 - Product: Aircraft, Large Airplane - Certification basis: Part 21, Part 25, Part 121, Part 129 - Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE) - Certificate PDF: https://openairdocs.org/files/sha256/72/9f/729fbcab61e557675c27fff93be6f146ae3c4abf7b56251804767b0eb522bf4a - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/57FEA193C87737F886257B4A00700DF2.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA9192SC-D ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company 747-200B Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE)) ## 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. FAA Form 8110- 2(10-68) Page 1 of 2 Number SA9192SC-D This Certificate issued to L-3 Co m m unications Integrated System s, L.P. 10001 Jack Finney Blvd. Greenville, TX 75402 Part 25 of the Federal Aviatio n Regulations. Original Product Type Certificate Number: A20WE Make : Boeing Model : 747-2G4 B Description of Type Design Change: MCS HF ALE radio upgrade co nsisting of the replacem ent of four (4) ex isting ARC-207 HF radios with HF -121C HF ALE capable radios and the addition of a switch panel and a relay/switch box to the MCS console in accordance with L -3 Com m unications Integrated System s Sealed Drawing List SDL 5648-1, Revision NC dated 24 March 2003, or later FAA approved data. 1. Compatibility of this design change with previously approved m odifications m ust be determ ined by the ins taller. 2. If the holder agrees to perm it another person to use this certificate to alter the product, the holder shall give the other person written evidence of that perm ission. 3. When installed, airplanes with this STC are lim ited to operations ex cluding those of an Air Carrier. Specifically, no operatio ns under 14 CFR 121, 14 CFR 129 or any foreign Air Carrier are perm itted. Date of application: 27 January 2003 Date reissued : Date of issuance : 27 March 2003 Date amended : March 22, 2013 – A md t 1 By direction of the Administrator (Signature) Michael E. Hopper ODA-750173-SW Administrator, Alternate (Title) Transfer the ownership of Supplem ental Type Certificate Num ber to (Name of transferee) (Address of transferee) (Number and street) (City, State, and Zip c ode) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State and Zip code) Ex tent of Authority (if licensing agreem ent): Signature of grantor (In ink): ## Every issue (1) - March 22, 2013: Amended, Current. [certificate](https://openairdocs.org/files/sha256/72/9f/729fbcab61e557675c27fff93be6f146ae3c4abf7b56251804767b0eb522bf4a) --- 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.