STC SA2837WE-D

CAMERA POCATES Of SAMETICA Department of Transportation Federal Aviation Administration Certificate Suppiemental Cupe OertneateRRENDERED on.

Number: SA2837NE-D This certificate issued to: United Airlines, Inc.

Certifies that the change in the type design for the following product with the tirritations ant sonditions therefor as specified hereon meets the aimenthiness requirenents if Part. 25 if the Federal Aviation Regulalions. (See I.C. Data Sheet A22WB fOr special conditions) Original Product Type Certificato Nurnben: AZZWE Make: McDonne1l Douglas Minded: DG-10-10 and DC-10-30 Description of Type Design Change:

Installs new lavatory module/bustle assembly at Door 2 RH/LH, underfloor plumbing and related systems, modified main deck floor support structure, external service panel in accordance with United Airlines DAS-1-WE, Sealed Drawing list 2837 dated 12/9/77, or later sealed revision.

Limilalinsandfandilions: The approval of this change in type design applies basically to the McDonnell Douglas DC-10 airplane. This approval should not be extended 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 change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. This determination should include consideration of significant changes in weight distribution such as an increase in the fixed disposable weight in the fuselage.

January 23, 1975 Date of Issuance: May 1, 1975 I ate arsended: December 9, 1977 FEDERAL AVIATION sim of the flaministrate.. April 18, 1984

41. Casterlie ( Signature ) TOMI NIS187 R. M. Casterline DAS Coordinator, DAS-1-WE (Title ) 47