STC SA3110SW-D

Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA31105W-D This certificate issued to: Century Flight Systems, Inc.

F.M. 1195 P. O. Box 610 Mineral Wells, TX 76067 Part 3 of the CIV11 Air Regulations:

Original Product - Type Certificate Number: A7CE Make: Cessna Model: 421C Description of Type Design Change:

Installation of Mitchell Automatic Flight System Model AK579, consisting of Century IV Autopilot or Model AK579FD, consisting of Century IV Flight Director Autopilot with Optional Remote Annunciator according to Bulletin No. 703, Revision 1, dated 7-9-76 and Master Drawing List No. 87A839, Revision A, dated 7-9-76.

FAA/DAS Approved Pilot's Operating Handbook Supplement, P/N 685333-1, dated 8-13-76 is required.

Placard, P/N 13A660-1 is required.

Thist bleatend the suppertiny date which is the basis fun appr val shull remain in effel until sur- Compatibility of this modification with other previously approved modifications determined by the vendered, suspended, nevoked, or a lermination date is otherwise es lablished by the Adminis tral, r of the Federal Aviation Administration .

8-13-76 Date of Application: 2-6-76 Jute missued: 5-24-84, Revision 2 Date of Issuance: 2-17-76 Jale mended:

FEDERAL AVIATION By Direction of the Administrator Don P. Watson ( Signalure ) TOMINIST RANO Manager, Aircraft Certification Division Southwest Region (Title)

47.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) - (Number and street) (City, Stake, and 2IP code) from (Name of grantor) (Print or type) _ (Address of grantor) / Number and sireel ;

(City, Stale, and ZIP code, Extent of Authority (if licensing agreement):

Signature of grantor (In ink): -