STC SA7031NM-D

Number SA7031NM-D

This certificate, issued to TASS, Inc.

12016 115th Ave NE, Suite 100 Kirkland, WA 98034

Part 25 of the Federal Aviation Regulations.(See Type Certificate Data Sheet A16WE for complete certification basis) Original ProductType Certificate Number: A16WE Make: Boeing Model: B737-500

Description of the Type Design Change: Installation of Allied Signal Part Number (P/N) 967-0102-001, Digital Flight Data Acquisition Unit (DFDAU) and necessary sensors and wiring to record twenty-two (22) parameters of data per Tramco Incorporated Master Drawing List (MDL) 96-030, Sheet 1, Revision New, dated March 22, 1996, or later Federal Aviation Administration (FAA) or Designated Alteration Station (DAS) approved revision.

Limitations and Conditions: 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 previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft.

A copy of this certificate and Tramco, Inc. MDL 95-030, Sheet 1, Revision New, dated March 22, 1996, or later FAA/DAS-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: February 27, 1996 Date reissued: April 27, 2012 Date of issuance: March 22, 1996 Date amended:

(Signature)

Acting Manager, Seattle Aircraft Certification Office (Title)