STC SA570NW

Number SA570NW

This certificate, issued to Gottlieb Corporation dba Air Transport Industries P. O. Box 5203 Everett, WA 98206

Part 3 of the Civil Air Regulations.

(See Type Certificate Data Sheet A9EA for complete certification basis.)

Original Product⎯Type Certificate Number: A9EA Make: DeHavilland Model: DHC-61-100, -200, and -300 Series

Description of the Type Design Change: Installation of a new interior panel in accordance with the FAA sealed Air Transport Industries Master Drawing List No. L175002, Revision A or later approved revisions.

Limitations and Conditions: The approval of this change in type design applies to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce, no adverse effect upon the airworthiness of the aircraft. This determination should include consideration of significant changes in weight distribution such as an increase in the fixed disposable weight in the fuselage. A copy of this certificate and Air Transport Industries Master Drawing List L175002, or later FAA-approved revision must be maintained as part of the permanent records for 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: November 14, 1977 Date reissued: July 14, 2006, December 4, 2008 Date of issuance: February 28, 1978 Date amended: July 14, 2006

(Signature)

Acting Manager, Seattle Aircraft Certification Office (Title)