STC SA09516AC-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09516AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Certifies that the change in the type design for the following product with the limitations and conditions therfor as specified hereon meets the aincorthiness requirement's of Part 3 of the Civil shir Regulations.

Original Product I ype Certificate Number:

1A8 Helio H-250, H-295 (USAF U-10D), H-395 (USAF L-28A or U-10B), H-395A, H-800, HT-295, and H-700 Installation of S-TEC System 20/30 Single and Two Axis Automatic Flight Guidance Systems, Model ST-394-20/30, according to Bulletin No. 994, dated. 12-14-01 and Master Drawing List No. 921209, dated 12-14-01 or later FAA Approved revisions of the above data (14 Volt System).

(See Continuation Sheet, Page 2, a part of this STC.)

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: 12-17-01 Date Reissued:

Date of Issuance: 12-19-01 Date Amended:

By Direction of the Administrator FEDERAL AVIATION телк (Signature) TOMINISTRATIOF Michael Keiran DAS Staff Coordinator, DAS 5 SW (Title) 47

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09516AC-D Limitations and Conditions: (con't.)

1. Also Eligible on modeis H-250, H-295 (USAF U-10D), H-395 (USAF L-28A or U-10B), H-395A, and H-800 (landplane, floatplane or amphibian).

2. Also Eligible on model H-295 (USAF U-10D) (landplane) when modified per STC SA1589CE (gross weight increase).

Also Eligible on models H-395 (USAF L-28A or U-10B) and H-395A (landplane, floatplane or amphibian) when modified per STC SA2261CE (gross weight increase).

4. Also Eligible on models HT-295 and H-700 (landplane).

5. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 892095, dated 12-19-01 is required for 1. Helio models H-250, H-295 (USAF U-10D), H-395 (USAF L-28A or U-10B), H-395A, and H-800 (landplane, floatplane or amphibian); 2. Helio model H-295 (USAF U-10D) (landplane) when modified per STC SA1589CE (gross weight increase); 3 Helio models H-395 (USAF L-28A or U-10B) and H-395A (landplane, floatplane or amphibian) when modified per STC SA2261CE (gross weight increase); and 4. Helio models HT-295 and H-700 (landplane) for S-TEC System 20 or later FAA Approved revisions of the above supplement.

6. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 892096, dated 12-19-01 is required for I. Helio models H-250, H-295 (USAF U-10D), H-395 (USAF L-28A or U-10B), H-395A, and H-800 (landplane, floatplane or amphibian); 2. Helio model H-295 (USAF U-10D) (landplane) when modified per STC SA1589CE (gross weight increase); 3.

Helio models H-395 (USAF L-28A or U-10B) and H-395A (landplane, floatplane or amphibian) when modified per STC SA2261CE (gross weight increase); and 4. Helio models HT-295 and H-700 (landplane) for S-TEC System 30 or later FAA Approved revisions of the above supplement.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

FAA Form 8110-2-1(10-69) Page 2 of 2

INSTRUCTIONS. The transfer endorsement below may be used to notify the appropriate FAA Pegional Office of the transfer of this Supplemental Type Certificate The FAA will reissue the certificate in the name of the transferee and forward it to him.

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

Signature of grantor (In ink):