STC SA09189AC

•Kmtri. States ®f, Apartment nf tEransprrtatiott - ^Bfeheral ^A&tation JVnmtmstralum upplemmtal Certificate SA09189AC Riddell Flying Service, Inc., an Arkansas Corporation 124 Phillips 204 Road West Helena, AR 72390 i aA Aviation 2 1 ; 2 3 s*& ft Federal Air Tractor AT-501; AT-502 Installation of a Walter M601E-11 turboprop engine and a Avia Hamilton Standard VJ8.510AG propeller on Air Tractor Airplane models AT-501 and AT-502 in accordance with Kokendoffer Enterprises Drawing List SA-DL1-AT501 dated January 30, 1996 or later FAA approved revision.

Compatibility of this design change with previously approved modifications must be determined by the installer. Operation of airplanes with this modification is limited to day VFR and in accordance with the procedures of the Kokendoffer Enterprises AT-501W Airplane Flight Manual dated May 23, 1996.

. October 09, 199S May 23, 1996 . 7/24/98; 10/14/99; 8/16/00 6/28/96; 7/24/98 (Signature) Michele M. Owsley, Manag* Airplane Certification Office, Southwest Region (Title) Any alteration of tfcJY certificate Is punishtiile by a fine of not FAA Form 8110-2(10-66) Rge~l of 2 VKcfeftinq 51,000. or iaprisoniBent not exceeding 3 yeJTJ- er both, TfpJs certificate may be trartsferied 1ft accordance utth FAR 21.47.

INSTRUCTIONS: The t ir.insf.ei: finjorsem*-nt t-vlou may be usnd tu notify ihf- rfpptupt i .it- F Regions! Office ut the trtinsfpr of trhf ^uppl nmental Tyv"= Clert i f it-Jiti-1 - The FAA will reiasiif the i_-ert i f i cdtf in thf n<ime of t IIP t rrfnsf PI-P^ ^nd fuCWdi'ii M (.:• l.jin.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) ___ ___ (Number a/id srre^r) ICj'ry, SlriTe, «uid ZIP cods-) from {Warns o^ grantor! (Print or type) (Address of grantor] (Number i street] (City, State, and ZIP Extent of Authority (if licensing agreement):

Signature of grantor {In ink)