STC SA3-307

4a Civil Air *

1. Installation of 145-gallon fuel Tanks.

2. Installation of 252 gallon fuels tanks.

Data required Remmert-Werner Drawing No’s SK-10090, SK-10091, SK-10092, SK-10093, SK-10171, SK-10191, SK-10192, or later FAA Approved revision.

For Item 1: Remmert-Werner Aircraft Flight Manual Rev. I, dated February 4. 1955, to Pan American Airways Aircraft Flight Manual dated September 15, 1954. For Item: 2: Aircraft Flight Manual Rev.1 dated July 25, 1958, to basic Remmert-Werner Aircraft Flight Manual dated March 25, 2955. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer 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.

Preferred Improvements, LLC 11234 Hackett Road Apple Creek, OH 44606

* A-618, A-669

* Douglas * DC-3 All Models July 3, 1958

July 24, 1958

10/1/58; 3/25/81; 6/30/83; 3/7/14;

12/5/17; 12/31/17; 12/07/2018.

Original Signed By:

Monica L. Nemecek

(Signature) Monica L. Nemecek Manager, Airframe & Administrative Section Chicago ACO Branch

(Title)

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