STC SA02326CH

Part 23 of the Federal Aviation Regulations.

(See Sheet 3 for complete certification basis)

Installation dual Rockwell Collins AHS-1000A Attitude Heading Reference Systems in accordance with Envoy Aerospace Master Data List JW2121A-3420-01, Rev. B, dated September 14, 2006, or later FAA approved revision.

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

2. FAA Approved Flight Manual Supplement, Envoy Aerospace Document JW2121A-3420-100, Revision -, dated September 21, 2006 or later FAA approved revision is a required part of this STC.

3. 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.

Jet Works Air Center 5035 Warbird Lane Denton, TX 76207 A59EU Make : Piaggio Model : P-180 Date of application : April 25, 2006

Date of issuance : September 22, 2006

Date reissued : November 2, 2006

( 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 SA02326CH

Date of Issuance: September 22, 2006

Certification Basis (continued)

The certification basis for the Piaggio aircraft models identified on Page 1 of this certificate is as follows:

a. The type certification basis for the Piaggio aircraft models identified on Page 1 of this certificate is shown on TCDS A59EU for parts not changed or not affected by this change.

b. The type certification basis for the parts changed or affected by this change since the reference date of application, April 25, 2006, is based upon Part 23 as amended by Amendment 23-55.

Regulations at the latest amendment 23-0 through 23-55

23.301(a), (b); 23.303; 23.305(a), (b); 23.307(a); 23.561(a), (b), (e); 23.603(a), (b); 23.605(a); 23.607(b);

23.609(a), (b); 23.611; 23.613(a), (b), (d); 23.619; 23.625(a); 23.1301(a), (b), (c), (d); (f); 23.1307; 23.1309(a),

(b), (c), (d), (e); (e);23.1322(a), (b), (d), (e); 23.1327(a); 23.1351(a); 23.1357(a), (b), (c), (d); 23.1359(b);

23.1365(a), (b), (d), (e), (f); 23.1367(a), (b), (c), (d); 23.1431(a), (b); 23.1501; 23.1529; 23.1581(a), (b), (c), (d),

(f); 23.1583(m); 23.1585(a), (j).

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