STC SA3228WE

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA3228WE This certificate issued to: Arnav Systems, INC.

Purt 3 gthe Civil Air Regulations:

Original Product _ Type bertificate Number: ATCE Make: Cessna Model: 421, 421A, 421B, 421C Description of Type Design Change: Installation of Silver Instruments Fueltron IIIG or IP digital fuel flow indicating system in accordance with FAA approved Silvel Instruments Master Drawing List A01564, Revision "A" , or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies basically 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 interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate and FAA Approved Silver Instruments Airplane Flight Manual Supplement dated January 11, 1980, or later FAA approved revision must be kept as part of the permanent records for the modified I anificate and the suppering dalu which is the hasis fur appr val shull remain in effel until sur rendered; suspended, revoked, or a termination date is sherwise es labdished by the Administrator of the Federal Aviation Administration .

Date of Application: April 12, 1976 Luke misseed: April 29, 1991 Dales/issuance: March 14, 1978 Jale umended: January 11, 1980, April 29, 1991 FEDERAL AVIATION By Direction of the Administrator Dant Omi / Signdlur Manager, Aircraft Modification Branch OMINIST RATO Seattle Aircraft Certification Office (Title) 47 FAA FORM 8110-2 (10-68)