STC SA02428AK

Northern Airframes, LLC 20130 Birchwood Loop Spur P.O. Box 670989 Chugiak, Alaska 99567

See FAA Approved Model List (AML) No. SA02428AK, Dated May 02, 2014, or later FAA approved revision

Installation of a hydraulically actuated ski drag assembly Master Data List Document Number MDL-48040, Revision Dev-3, dated April 1, 2014.

1) If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

2) The installer must determine whether this design change is compatible with previously approved modifications.

3) Aircraft Flight Manual Supplement for Grizzly Claw Ski Drag Doc. No. AF48040-AFMS, Revision -, dated May 02, 2014, or Supplemental Aircraft Flight Manual for Grizzly Claw Ski Drag Doc. No. AF48040-SFM, Revision -, dated May 02, 2014, or later FAA approved revision is a required part of this installation.

4) Instructions for Continued Airworthiness Grizzly Claw Ski Drag, Doc. No. AF48040-ICA, Revision -, dated January 21, 2014 or later FAA accepted revision is a required part of this installation.

5) This STC does not approve the installation of skis on the aircraft listed; only the installation of the ski drag when a ski has previously been approved.

(Signature) August A. Asay Manager, Anchorage Aircraft Certification Office

(Title)

January 18, 2013 May 02, 2014

FAA Form 8110-2-1(10-69) Page 2 of 2