# STC SA2797NM-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: United Airlines Inc, United States - Description: Seating capacity of first class cabin will be increased from 12 to 24 seats. - Applied: October 25, 1991 - Status date: November 30, 2011 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A2NM](https://openairdocs.org/tcds/A2NM) - Certificate PDF: https://openairdocs.org/files/sha256/43/3d/433d614427e55ac289d7735da119ecf300e9ead0f4a50a66fbd7cb59ce5f50b4 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1EDE348E2EF04F36862579E40069AF1F.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA2797NM-D ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company 757-200 Series ([TCDS A2NM](https://openairdocs.org/tcds/A2NM)) ## 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. United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate This certificate has been reissued to replace the original certificate reported as lost. This Certificate issued to United Air Lines, Inc. 600 Jefferson Street Houston, Texas 77002 Part 25 of the Federal Aviation Regulations. See Type Certificate Data Sheet A2NM for special conditions. Original Product Type Certificate Number : A2NM Make: Boeing Model: 757-200 Series Description of Type Design Change: The seating capacity of the first class cabin will be increased from 12 to 24 seats (24F/164Y). This modification installs three add itional rows of First Class (12 seats total) and removed three rows of Coach (18 seats total) and class divider partitions in accordance with United Air Lines, DAS-1-WE, Approved Drawing List No. 2797 dated November 4, 1991, or later FAA approved revisions. Limitations and Conditions : The approval of this installation applies basically to the Boeing 757-200 Series only. This approval should not be exte nded to other aircraft of this mode l on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modificati ons will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this STC must be included in the permanent records of the modified 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 Date of application : October 25, 1991 Date of issuance : November 4, 1991 Date reissued : November 30, 2011 ( Signature) Haifa Haj-Eid Supervisor, Technical & Administrative Support Staff Los Angeles Aircraft Certification Office ( 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) Signature of grantor (In ink): U.S. GPO 1987-763-28 ## Every issue (1) - November 30, 2011: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/43/3d/433d614427e55ac289d7735da119ecf300e9ead0f4a50a66fbd7cb59ce5f50b4) --- 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.