STC SA09425AC-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09425 AC-D This certificate issued to: S-TEC Corporation One S-TEC Way Mineral Wells Municipal Airport Mineral Wells, TX 76067-9236 Part 3 of the Cied An Regulations.

Original Product I ype Certificate N unter: 3A12 Make: Cessna Model: 172M, 172N, 172P, and 172Q Description of Type Design Change:

Installation of S-TEC System 40X/50X Single and Two Axis Automatic Flight Guidance Systems, Model S1-868-40X/50X, according to Bulletin No. 968, dated 3-14-00 and Master Drawing List No. 921169, dated 3-14-00 or later FAA Approved revisions of the above data (28 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: 3-15-00 Date Reissued:

Date of Issuance: 3-17-00 Date Amended:

By Direction of the Administrator FEDERAL AVIATION (Signature) TOMINISTRATIO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title) ble by a Fine of not exceeding $1,000, or imprisonment not exc ding 3 years, or both.

FAA Form 8110-2(10-68) This certificate may be transferred

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09425 AC-D Limitations and Conditions: (con't.)

1. Also eligible on models 172M, 172N, and 172P when modified by 180 H.P. engine conversion.

FAA/DAS Approved Supplemental Flight Manual, P/N 891914, dated 3-17-00 for Cessna models 172M; and 172N, S/N 17271034 and below; and Cessna models 172M; and 172N, S/N 17271034 and below when modified by 180 H.P. engine conversion for S-TEC System 40X or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891915, dated 3-17-00 for Cessna models 172N, S/N 17271035 and on; 172P and 172Q; and Cessna models 172N, S/N 17271035 and on and 172P when modified by 180H.P. engine conversion for S-TEC System 40X or later FAA Approved revisions of the above supplement.

4. FAA/DAS Approved Supplemental Flight Manual, P/N 891920, dated 3-17-00 for Cessna models 172M; and 172N, S/N 17271034 and below; and Cessna models 172M; and 172N, S/N 17271034 and below when modified by 180 H.P. engine conversion for S-TEC System 50X or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891921, dated 3-17-00 for Cessna models 172N, S/N 17271035 and on; 172P and 172Q; and Cessna models 172N, S/N 17271035 and on and 172P when modified by 180H.P. engine conversion for S-TEC System 50X or later FAA Approved revisions of the above supplement

6. 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 tranefer endorsement below may be used to notify the appropriate FAA Regional Office of the transfer of the 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 & street) (City, State, and ZIP code) Extent of Authority (if licensing agreement) :

Signature of grantor (In ink):