STC SA00531WI

This certificate issued to: Air Plains Services Corporation Wellington Airport P. O. Box 541 Wellington, KS 67152

Part 3 of the Civil Air Regulations.

Original Product - Type Certificate Number : 5A6 Make : Cessna Model : 180, 180A through 180K

Installation of D3A34C401/90DFA -2, -4, -6, -8, and -10 propellers on Cessna Aircraft Models 180, 180A though 180K, Serial Nos. 30000 through 53203 and associated changes in accordance with CS Industries Installation Instructions No. C-180 Rev --, dated May 12, 1997, or later FAA approved revisions. FAA Approved Airplane Flight Manual Supplement dated September 18, 1997 or later FAA approved revisions required for Cessna Model 180K Serial Nos. 52490 and 53001 through 53203.

Installation of the propeller shown above is limited to those airplanes previously modified by Supplemental Type Certificate to include installation of Teledyne Continental IO-520 series and IO-550 series engines that may be modified to produce less than originally certificated maximum takeoff power.

Date of application : April 07, 1997 Date of issuance : May 12, 1997 Date reissued : September 22, 2005

Date amended : May 14, 1997; September 18, 1997

Original signed by Dan Withers

(Signature) Dan Withers Program Manager Wichita Aircraft Certification Office (Title)

FAA FORM 8110-2-1(10-69) PAGE 3 of 3 PAGES

Number SA00531WI

Date of Issuance: May 12, 1997 Date Amended: May 14, 1997 Date Amended: September 18, 1997 Date Reissued: September 22, 2005

They may be modified to produce less than originally certificated maximum takeoff or maximum cruise power. The original crankshaft counterweight configurations for these engines must be maintained.

Compatibility of this design change with previously approved modifications must be determined by the installer. 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.

The operating restriction placards state:

“Avoid Continuous Operation between the following RPM and manifold pressures at the stated diameters:”

Propeller Model Diameter Range (inches) RPM Inches MP C401/90DFA -2 88 to 86 1900 to 2100 25” and above C401/90DFA -4 86 to 84 1900 to 2100 26” and above C401/90DFA -10 80 to 78 2050 to 2250 27” and above

“Continuous operation between the 1950 RPM and 2150 RPM at 25 inches manifold pressure and above is prohibited” on C401/90DFA propellers with 84 to 82 inch diameters on 300 HP engines.

--END--