STC SA1109WE

FAA Form 8110-2 (5/14) Page 1 of 2

Number: SA1190WE

Part 4a of the Civil Air Regulations.

Original Product – Type Certificate Number: A-743 Make: Boeing Model: A75N1 Description of Type Design Change:

Installation of Pratt & Whitney R-985 AN1 Engine (S/N 20458) which has been altered by installation of unapproved piston rings on a Boeing A75N1 aircraft.

Electro-Coatings piston rings, P/N 251822, 251824 and 251825 are of the same metallurgy (ECI-41) as piston rings already approved for certain Continental Motors Inc.

Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation made in Boeing Model A75N1, Serial No. 20458, only.

The installation of an unapproved engine on an agricultural aircraft (Part 8) is in accordance with FAA Advisory Circular 20-14 Paragraph 4C.

The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter the product, the holder must give the other person written evidence of that permission.

Date of Application: April 06, 1966 Date Reissued: 08/27/07; 07/20/15; 01/25/16; 10/31/16 Date of Issuance: April 18, 1966 Date Amended: May 24, 1983 Revision 1

Signature

Title James A. Grigg Acting Manager, Fort Worth Aircraft Certification Office, Southwest Region Continental Motors Inc.

2039 S. Broad St.

Mobile, AL 36615

FAA Form 8110-2 (5/14) Page 2 of 2

Transfer the ownership of Supplemental Type Certificate Number: SA1190WE

To (Name and address of transferee)

From (Name and address of grantor)

FAA Form 8110-2 (5/14) Page 3 of 3