# STC ST00003LB-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: United Airlines Inc, United States - Description: Increase Business Class seat pitch in C-Zone, D-Zone, and U/D, changing seat count from 35F-134C-124Y to 35F-105C-124Y. Remove (29) Business Class seats. Rework (105) Business Class seats to provide 12" recline and install seats at increased 48" -50" pitch in C-Zone, D-Zone, and U/D. Remove (1) existing centerline video/coat closet and install (1) new centerline video/coat closet in B-Zone. Install (2) new centerline coat closets in D-Zone. This modification was accomplished in accordance with United Air Lines, DAS-1-WE, Approved Master Drawing List No. 00003, dated May 15, 1995, or later FAA approved revisions. - Applied: November 30, 2011 - 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/sha256/93/b7/93b78ecffe68ba48f233b29241205404c37dc1d17d6c3b61dfa591fef7156fb6 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D07288832145B65F862579950065BA1D.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/ST00003LB-D ## ADs that name it (0) None. ## Approved models (3) - The Boeing Company 747-200B Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE)) - The Boeing Company 747-200C Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE)) - The Boeing Company 747-200F 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 Regulations. Ref. Type Certificate Data Sheet A20WE for Special Conditions Original Product Type Certificate Number : A20WE Boeing 747-200 Series Description of Type Design Change: Increase Business Class seat pitch in C-Zone, D-Zone, and U/D, changing seat count from 35F-134C-124Y to 35F-105C-124Y. Remove (29) Business Class seats. Rework (105) Business Class seats to provide 12” rec line and install seats at increased 48” –50” pitch in C-Zone, D-Zone, and U/D. Remove (1) existing cen terline video/coat closet and install (1) new centerline video/coat closet in B-Zone. Install (2) new centerline coat closets in D-Zone. This modification was accomplished in accordance with United Air Lines, DAS-1-WE, Approved Master Drawing List No. 00003, dated May 15, 1995, or later FAA approved revisions. Limitations and Conditions: This approval does not extend to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this cha nge and any of those other previ ously approved modifications will introduce no adverse affect upon the airworthiness of th at aircraft. This determination should include consideration of significant changes in weight dist ribution such as an increase in the fixed disposable weight in the fuselage. 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 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: April 17, 1995 Date of issuance: May 15, 1995 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/sha256/93/b7/93b78ecffe68ba48f233b29241205404c37dc1d17d6c3b61dfa591fef7156fb6) --- 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.