STC SA4721NM

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SAA721NM This certificate issued to: SYNCON, INC.

Certifies that the change in the type design for the folowing product with the limitalions and conditions therefor as specifud hereon meels the airinthiness reguirements of Port * of the * Regulations Original Product - Type Certificate Number: *See attached Approved Model List (AML) Make: Number: SA4721NM for list of approved airplane models and applicable Model: airworthiness regulations.

Descriplion fLype Designitshange: Installation of Syncon, Inc. Alarm System, Model 100C, on non-pressurized metal structure aircraft, as listed on the FAA Approved Model List (AML) of this SIC, or later FAA approved revisions, in accordance with SynCon Alarm Installation Instructions, Revision 1, dated March 2, 1990.

Limilalins and bendilions: Approval of this change applies to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those or other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of rendered, suspended, revoked, or a termination dale is sherwise established by the SIderin is (rater of the Federal Aviation Administration Date of Application: December 6, 1988 Luke missued: April 18, 1990 Date of Issuance: . April 18, 1989 Salesmended: May 8, 1990 FEDERAL AVIATION By Direction of the Administrator Stewart Kelles.

(Signáture) TONIN STRATO Aircraft Certification Office Assistant Manager, Seattle (Title) 47 FAA FORM 8110-2 (10-68)