# STC SA2745NM-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: United Airlines Inc, United States - Description: Modifies the aircraft to install a "Mark II" touchscreen ARINC Communication Addressing and Reporting System (ACARS) - Applied: January 14, 1988 - Status date: November 30, 2011 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE) - Certificate PDF: https://openairdocs.org/files/sha256/16/c7/16c7dfccca4583fe084c04474a2362c323b4494435ceef0d72b0746221517931 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EEC4AEBCFFB71F3E8625799E0072BCAE.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA2745NM-D ## 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 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. This Certificate issued to United Air Lines, Inc. 600 Jefferson Street Houston, Texas 77002 Part 25 of the Federal Aviation r Regulations Reference Type Certificate Data Sheet A20WE for Special C ditiOriginal Product Type Certificate Number : A20WE Boeing 747-100 Series Description of Type Design Change: Modifies the aircraft to install a “Mark II” touchscreen ARINC Communication Addressing and Reporting Sy stem (ACARS). The installation is in accordance with DAS-1-WE Approved United Ai rlines Drawing List 2745, dated March 29, 1988 or later FAA approved revisions. Limitations and Conditions: The approval of this installation applies basically to the 747-100 series only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporate d, unless it is determined by the installer that the interrelationship between this change a nd any of those other previously approved modifications will introduce no adverse effect upon th e airworthiness of this 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. This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration. Date of application: January 14, 1988 Date of issuance: March 31, 1988 Date reissued: November 30, 2011 ( Signature) Haifa Haj-Eid Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title) NOTE: **DO NOT DELETE THIS PAGE.** **DO NOT ADD ANY DATA TO THIS PAGE.** **THIS PAGE IS FOR PAGE NUMBERING PURPOSES, PLEASE DISCARD PRINTED COPY.** ## Every issue (1) - November 30, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/16/c7/16c7dfccca4583fe084c04474a2362c323b4494435ceef0d72b0746221517931) --- 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.