STC SA5180NM

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA5180NM This certificate issued to: Ritter Cams, Inc.

Part 3 of theredera 1 Aviation Regulalions:

Original Product - Type Certificate Number: A-782 Make: Navion Model: Basic, A, B, D, E, F, & G Description of Type Design Change: Installation of engine, as modified by supplemental Type Certificate (STC) SE5177NM on the airplane models listed above.

to the above aircraft models only. This approval should not be extended to other Imilalinsand banditions: Approval of this change in type design applies specifically aircraft of these models on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that airplane.

A copy of this certificate shall be maintained as part of the permanent records for This cortificale and the sue e supperling dalu which is the basis for appreval shull remain in effect until surrendered, suspended, revoked, or a lermination dale is thorvise is lablished by the ildminis trater of the Federal Aviation Administration .

Dalesapplicalim: June 17, 1991 Jule missued:

Date of Issuance: Jalamendul: October 17, 1991; February 27, 1992 FEDERAL AVIATION By Direction of the Administrator ( Signature ) TOMINISTRAIOS Assistant Manager, Seattle Aircraft Certification Office, ANM-101S (Title )

FEB 2 7 1902 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA51B0Ns Applicability of the Design Change:

The following aircraft models are eligible to install Teledyne-Continental Models IO-520-B, IO-520-BA, and IO-520-BB engines, modified per STC SE5177NM.

Airplane Type Certification Basis Models Cert No. Effective Date Navion (Basic) A-782 CAR 3 Navion A, B, D, E, F, & G November 13, 1945 The type of propeller approved for this installation is:

McCauley Model 3A32C-406-C (hub) with 6-82NDB-2 (blades).

This propeller may be installed only on engines that have one 4th. order and three 6th. order crankshaft dampers.

NOTE: Installation of the Teledyne-Continental engines listed above on the Navion, Navion A, Navion B, Navion D, Navion E, Navion F, and Navion G may be accomplished only on airplanes that have been modified to accept Teledyne- Continental Model IO-520-B engines. This modification should have been accomplished in accordance with Data Sheet A-782.

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