STC SA02098CH

Part 23 of the Federal Aviation Regulations. (See Type Certificate Data Sheet No. A27CE amended by Special Condition No. 25-284-SC, dated January 12, 2005, Docket No. NM300, for complete certification basis.)

Installation of a dual Shadin ADC-6000 Air Data Computer System in accordance with Shadin Master Data List Document No.

DN2807B-002, Revision K, dated August 29, 2005 or later FAA approved revision.

1) Compatibility of this design change with previously approved modifications must be determined by the installer.

2) Airplane Flight Manual Supplement, Shadin Document No. DN2807B-006, Revision A, FAA approved September 1, 2005, or later FAA approved revision, is required on board modified aircraft with ADC-6000R, Part Numbers 962861-00-00 or 962861-00-

01.

3) Airplane Flight Manual Supplement, Shadin Document No. DN2807B-006A, Revision NC, FAA approved on September 1, 2005, or later FAA approved revision, is required on board modified aircraft with ADC-6000R, Part Numbers 962861-01-00 or 962861-01-01.

Shadin Avionics 6831 Oxford Street St. Louis Park, MN 55426 A27CE Make : Cessna Model : 501 & 551 Date of application : March 3, 2004

Date of issuance : February 16, 2005

Date reissued : March 10, 2005, June 8, 2006

Date amended : September 1, 2005

( Signature) Charles L. Smalley Manager, Systems and Flight Test Branch Chicago Aircraft Certification Office

( Title)

FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES

Number SA02098CH

Date of issuance : June 8, 2006

4) Instructions for Continued Airworthiness, Chapter 10, contained in Shadin Document No. DN2807B-017, Revision IR, FAA approved on February 16, 2005, or later approved revision is required with this approva.l.

5) 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.

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