STC ST00052LA-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST00052LA-D This certificate issued to: Hollingsead International Certificate 2226 Goodyear Avenue SURRENDERED Ventura, California 93003 6-23-04 on - Certifies that the change in the type design for the following product with the limitation's and conditions therefor as specified hereen meet's the airworthiness requirement's of Part 25 of the Federal Aviation Regulations.

Original Product Type Certificate Number AOWE Make: McDONNELL DOUGLAS Model: DC9 - 51 and MD - 83 Description of Type Design Change:

Provisions for GTE Airfone in:

• Weber Model 4001 Seatbacks per:

ERDA Doc. No. MDL-033 and Elsinore Doc. No. 4014-1125-010 for the MD-83 aircraft

• Weber Model 4000 Seatbacks per:

ERDA Doc. No. MDL-032 and Elsinore Doc. No. 4014-1125-020 for the DC-9-51 aircraft, or later FAA approved revisions.

Limitations and Conditions: 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.

See sheet three (3)

Date of Application: July 14, 1995 Date Reissued: June 25, 1996; April 1, 1998;

June 13, 2005; July 31, 2006 Date of Issuance: September 15, 1995 Date Amended:

FEDERAL AVIATION By Direction of the Administrator lt. K. Woo (Signature) TOMNISTRATIO Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST00052LA-D Limitations and Conditions: (Continued) This approval should not be incorporated on any certificated product of this model on which other approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those previously incorporated modifications will not introduce any adverse effect upon the airworthiness of the certificated product. The non-metallic materials used in the construction of these passenger seats meet the flammability requirements of § 25.853(a) Appendix F Part I (a)(1)(ii) and § 25.853(c) Appendix F Part II Amendment 25-83. A copy of the STC must be included in the permanent records of the modified aircraft. This STC must be accomplished in conjunction with STC SA1455GL amended March 19, 1994, for Weber Model 4001 seats installed in McDonnell Douglas MD-83 aircraft and STC SA1329GL amended September 8, 1994, for Weber model 4000 seats installed in McDonnell Douglas DC-9-51 aircraft.

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TRANSFER ENDORSEMENT Transfer the ownership of the Supplemental Type Certificate Number to (Name of transferee) (Address of transfer)_ (Number and street) (City, State, and Zip code) trom (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and Zip code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):