STC SA1225NW

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA 1225NW This certificate issued to: Seaplane Flying, Inc.

Purt 3 1f the CiVil Air Fragulations Original Product - Type Gertificate Number: A-767 Make: Univair (Stinson) Model: 108-2 Lescriplin Jype taign Change: Installation of a Nite Sign, Inc. Model N478 Aeria dvertising System in accordance with Seaplane Flying, Inc. photographs 1 through S NOTE: This installation includes a Skytronics, Inc. 50 amp alternator (P/N 6575T), voltage regulator (MOD J12M205P), circuit breakers (Dwg. P1001), and associated systems.

The aircraft will be operated in accordance with Operating Limitations dated 5 - 11 - 81 for Multiple Airworthiness Restricted/Normal Category..

Limitations and Conditions: (See "Continuation Sheet", Page 3) Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in Univair (Stinson) 108-2, Serial Number 108-2755 only. A copy of this Certificate shall be maintained as part of the permanent records for the modified aircraft.

April 20, 1961 Wau pun I ate of rasuance. MAy 18 1981 Date Amended:

FEDERAL AVIATION By Direction of the Administrator 1 Signature TO O Acting Chief, Seattle Area Aircraft Certification Office { Title)

47.

FAA Fok- 8110-2 (10-68)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Shect) May 18, 1981 Number: SA1225NW Description of Type Design Change:

NOTE: Display these placards in full view of the pilot:

WHEN NITE SIGN IS INSTALLED (RESTRICTED CATEGORY) VNE = 100 MPH CAS Vy = 75 MPH CAS CREW IS LIMITED TO: PILOT AND ONE OBSERVER

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FAA FORM B110-2-1 (10-69) PAGE 3OF 3 PAGES C FAA AC 73-2651