STC SA4-220

United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate This certificate has been reissued to replace the original certificate reported as lost

FAA Form 8110-2(10-68) Page 1 of 2 Number SA4-220 This Certificate issued to Preferred Improvements, LLC 11234 Hackett Rd. P. O. Box 12 Kidron, Ohio 44636 Kidron, Ohio

Part 4a* of the Civil Air Regulations.

*(CAR 4a, Bulletin 7a and Special Regulation 407) Original Product Type Certificate Number :

A-618 and A-669 Boeing DC-3, DC-3A, DC-3C and DC-3D Description of Type Design Change: Installation of tail wheel cover and fairing to be made in accordance with drawings listed on Ben Howard and Associates Sealed Data List No. 1003.

Limitations and Conditions: The approval of this change in type design applies basically to standard models DC-3, DC-3A, DC-3C and DC-3D airplanes only. This approval should not be extended to other specific airplanes 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 previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. A copy of this STC must be included in the permanent records of the modified aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of application : May 3, 1957

Date of issuance : May 27, 1957

Date reissued : September 27, 1974;

February 25, 2016; July 15, 2016

By direction of the Administrator . Original signed by:

Gregory J. Michalik

(Signature) Karol Mordasiewicz Manager, Airframe & Administrative Branch Chicago Aircraft Certification Office (Title)

Transfer the ownership of the Supplemental Type Certificate Number to (Name of transferee) (Address of transfer) (Number and street)

(City, State, and Zip code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street)

(City, State, and Zip code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):