STC SA1977WE

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

Reissued on July 31, 2017 to supersede the original STC, which has been lost or misplaced.

Number: SA1977WE

Part 3 of the Civil Air Regulations, effective 15 May 1956 as amended by 3-4.

Original Product – Type Certificate Number: 3A19 Make: Cessna Model: 150 through 150L

Installation of recontoured wing leading edge and the following options in accordance with the drawings called for on FAA Sealed Robertson Aircraft Drawing List No. 12.

OPTIONS: Stall fences – Robertson Aircraft wing tips – positive aileron seals.

This approval limited to the 100 HP Landplane only. The 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 affect upon the airworthiness of that aircraft. A copy of this Certificate shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: June 19, 1969 Date Reissued: 1/5/70; 8/10/72; 11/5/73; 11/8/84; 10/10/86;

7/21/05; 7/31/17 Date of Issuance: July 23, 1969 Date Amended: 9/8/69; 11/30/70; 2/26/71; 8/10/72

Signature

Title Jim Grigg Manager, Fort Worth A CO Branch, Compliance & Airworthiness Division Sierra Industries, Ltd.

122 Howard Langford Drive Uvalde, TX 78801

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

Transfer the ownership of Supplemental Type Certificate Number: SA1977WE

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA18NW

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