STC SA1429NM

United States of America Department of Transportation_Federal Aviation Administration Supplemental Type Certificate Number SA1429NM

This certificate, issued to: Britax Heath Tecna Inc.

3225 Woburn Street Bellingham, WA 98226

Part 4b of the Civil Air Regulations.

Original ProductType Certificate Number: A6WE Make: McDonnell Douglas Model: DC-9-31, DC-9-32, DC-9-33F, DC-9-34

Description of the Type Design Change : Installation of ESCI Retrofit Kit in accordance with Heath Tecna Drawing List No. HPD-DL-16, Revision K, dated December 21, 1984, or later FAA approved revisions.

Compliance with the emergency lighting provisions of Federal Aviation Regulations 25.812(c) and

25.812(h) in effect by Amendment 25-32 have been shown.

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 other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. The resulting interior arrangement, along with the required placarding, has not been evaluated and is not part of the STC. A copy of this Certificate shall 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 evidence of that permission.

Date of application: June 1, 1981 Date reissued: 6/1/96; 7/20/00 Date of issuance: February 2, 1982 Date amended: 3/3/83; 4/7/83; 2/27/85;

7/20/00

(Signature) Acting Manager, Seattle Aircraft Certification Office (Title)