STC SA4042WE

Number SA4042WE

This certificate, issued to Heath Tecna Inc.

3225 Woburn Street Bellingham, WA 98226

Part 25 of the Federal Aviation Regulations.

Original ProductType Certificate Number: A16WE Make: Boeing Model: 737-200 series

Description of the Type Design Change: Installation of new overhead enclosed stowage compartments, new fluorescent wash lighting and modified passenger service units in accordance with HITCO Drawing List 9200002 DL, Revision C, dated October 4, 1979, or later FAA approved revision; or in accordance with FAA approved HITCO Drawing List 9200000 DL, Revision D, dated January 14, 1980, or later FAA approved revision; or in accordance with HITCO Drawing List 9200009 DL, Revision A, dated January 7, 1981, or later FAA 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 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: October 17, 1978 Date reissued: 9/28/90; 10/28/94; 6/1/96;

7/20/00; 2/17/05 Date of issuance: November 8, 1979 Date amended: 3/20/80; 2/10/81; 11/3/82

(Signature)

Acting Manager, Seattle Aircraft Certification Office (Title)