STC SA09356AC-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA09356AC-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 Cirt dis Regulutions.

Original Product Type Certificate A umber: 3A10 Make: Cessna Model: 3101, 310J, E310J, 310K, 310L, 310N, 310P, T310P, 310Q, T310Q, 310R, and T310R Description of Type Design Change:

Installation of S-TEC System 30 ALT Altitude Hold System, Model ST-813, according to Bulletin No.

913, dated 4-08-98 and Master Drawing List No. 921088, dated 4-08-98 or later FAA Approved revisions of the above data (28 Volt System).

Also eligible on Models 3101, 310J, E310J, 310K, 310L, and 310N When Modified Per STC SA412SO (300 H.P. Colemill Conversion).

Also eligible on Models T310P and T310Q When Modified Per STC SA2750SW (RAM Modification).

(See Continuation Sheet, Page 2, apart 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: 4-09-98 Date Reissued:

Date of Issuance: 4-13-98 Date Amended:

By Direction of the Administrator EDERAL AVIATION Ween Hones (Signature) TOMNISTRATO William J. Thomas DAS Staff Coordinator, DAS 5 SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA09356AC-D Limitations and Conditions: (con't.)

3. FAA/DAS Approved Supplemental Flight Manual, P/N 891711, dated 4-13-98 is required for Cessna Models 3101, 310J, E310J, 310K, 310L, and 310N And The Above Models When Modified Per STC SA412SO (300 H.P. Colemill Conversion) or later FAA Approved revisions of the above supplement.

4. FAA/DAS Approved Supplemental Flight Manual, P/N 891712, dated 4-13-98 is required for Cessna Models 310P, T310P, 310Q, and T310Q, and T310P and T310Q When Modified Per STC SA2750SW (RAM Modification) or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891713, dated 4-13-98 is required for Cessna Models 310R and T310R 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

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):