STC SA5633NM-D

Supplemental type certificate · United Airlines Inc

Holder
United Airlines Inc · United States
Status
Current · Reissued
Status date
November 30, 2011
Applied
January 24, 1992
Product
Aircraft · Large Multi-Engine
Certification basis
Part 21, Part 25
Data sheet
TCDSA20WE

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Extend Business Class into D-zone section, changing seat count from 36F-98C-244Y to 36F-126C-184Y. Remove (60) Coach Class Seats, install (28) Business Class Seats. Install (2) outboard and (1) centerline class divider partitions. Install (1) centerline video projector and screen. Install (2) outboard class divider mounted video monitors. Replace single flight attendant seat at door 2R with a double flight attendant seat.

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may 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.

A20WE

Boeing

B747-400 Series Description of Type Design Change: Extend Business Class into D-zone section, changing seat count from 36F-98C-244Y to 36F-126C-184Y. Rem ove (60) Coach Class Seats, install (28) Business Class Seats. Install (2) outboard and (1 ) centerline class divider partitions. Install (1) centerline video projector and screen. Install (2) outboard class divider mounted video monitors.

Replace single flight attendant seat at door 2R with a double flight attendant seat. This modification was accomplished in accordance with United Air Lines, DAS-1-WE, Approved Master Drawing List No. 5633 dated April 13, 1992, or later approved revisions.

Limitations and Conditions: This approval does not extend to other aircraft of this model on which other previously approved modifications ar e incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse e ffect upon the airworthiness of that aircraft.

This determination should include considerations of significant changes in weight distribution such as an increase in the fixed disposable weight in the fuselage. If the holder agrees to permit another person to use this certificate to alter th e 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 24, 1992

Date of issuance: April 13, 1992

Date reissued: November 30, 2011

( Signature) Haifa Haj-Eid Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)

NOTE:

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ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 1

MakeModelData sheet
The Boeing Company747-400 SeriesA20WE