STC SA08996AC-D

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA08996AC-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 shi Regulations.

Original Product I ype Certifcate A unter: A7CE Make: Cessna Model: 414A and 421C Description of Type Design Change:

Installation of S-TEC System 55/55X Two Axis Automatic Flight Guidance System, Model ST-578, according to Bulletin No. 678, Revision 3, dated 5-10-01 and Master Drawing List No. 92758, Revision C, dated 5-10-01 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: 4-06-95 Date Reissued:

Date of Issuance: 4-25-95 Date Amended: 4-10-97, 5-10-01 By Direction of the Administrator FEDERAL AVIATION талк (Signature) TOMINSTRATO Michael Keirnan DAS Staff Coordinator, DAS 5 SW (Title)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA08996AC-D Limitations and Conditions: (con't.)

Also eligible on Model 414A When Modified Per STC SE09104SC (335 H.P. Engine Conversion and 7,105 Lbs. Gross Weight Increase) and/or STC SA8125SW (Vortex Generators and Strakes).

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891157, dated 4-25-95 is required for Cessna Model 414A or later FAA Approved revisions of the above supplement.

3. FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891161, dated 4-25-95 is required for Cessna Model 421C or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891157, Revision 1, dated 4-10-97 is required for Cessna Model 414A And The Above Model When Modified Per STC SE09104SC (335 H.P. Engine Conversion and 7,105 Lbs. Gross Weight Increase) and/or STC SA8125SW (Vortex Generators and Strakes) or later FAA Approved revisions of the above supplement.

FAA/DAS Approved Pilot's Operating Handbook and/or Airplane Flight Manual Supplement, P/N 891157, Revision 2, dated 5-10-01 is required for Cessna model 414A and the above model when modified per STC SE09104SC (335 H.P. engine conversion and 7,105 Lbs. gross weight increase) and/or STC SA8125SW (vortex generators and strakes) for S-TEC System 55/55X 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 891161, Revision 1, dated 5-10-01 is required for Cessna model 421C for S-TEC System 55/55X 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 B110-2-1(10-69) Page 2 of 2

The FAA will reissue the certificate in the name of the transferes and forward it to nim

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):