STC SA01251AT

This certificate issued to

Part * of the Regulations.

Installation of left hand and right hand nacelle fuel cell assemblies in accordance with A/C Fuel Cells Worldwide, Inc., “Installation Instructions,” dated August 30, 1994; and A/C Fuel Cells Worldwide, Inc., Drawing B2107, Rev. A., dated December 2, 1996, for the left hand side nacelle fuel cell; and Drawing B2108, Rev. dated December 2, 1996, for the right hand side nacelle fuel cell; or later FAA approved revision.

Limitations and Conditions: This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effects upon the airworthiness of the aircraft. 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.

(See continuation 3 of 3)

FFC Manufacturing 4010 Pilot Dr., Suite 103 Memphis, TN 38118 See continuation 3 of 3 Make: Beechcraft Model: (See continuation 3 of 3) Date reissued: July 31, 2002; April 29, 2009

( Signature) Melvin D. Taylor Manager Atlanta Aircraft Certification Office

( Title)

Date of application: October 1, 1996

Date of issuance: January 23, 1997

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

Number SA01251AT

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

Number SA01251AT

Aircraft Model Eligibility:

Type Certificate Data Sheet – 3A20-CAR 3

Model and Serial Number Eligibility:

Beechcraft 90, A90, B90, C90, C90A, and E90 – All Serial Numbers

Type Certificate Data Sheet – A31CE – FAR Part 23

Model and Serial Number Eligibility:

Beechcraft F90 – Serial Number LA2 and up

Limitation and Conditions:

Left Hand Side Nacelle Fuel Cell – B2107-1

Right Hand Side Nacelle Fuel Cell – B2108-1