FOR IMMEDIATE RELEASE

Sierra and CT Aerospace sign engine agreement

For Immediate Release August 13, 2007

Sierra and CT Aerospace sign engine agreement
UVALDE, Texas – Sierra Industries Ltd and CT Aerospace LP announce the signing of a
definitive agreement whereby CT Aerospace will acquire the surplus Pratt & Whitney JT15D-4
aircraft engines from Sierra’s latest re-engining program, the Sierra Super II.

Sierra’s Super II is a state-of-the-art re-engining of the Citation II aircraft, providing dramatically
increased range, speed and overall performance while reducing carbon emissions and fuel
usage. The Super II replaces the original Pratt engines with Williams International FJ44-3A
engine, featuring full authority digital engine control (FADEC) for significantly improved
performance, enhanced efficiency and reduced cabin noise. The Super II is an affordable and
cost-effective solution, offering comparable performance to the latest light business jets at a
fraction of the acquisition cost. For more information on the Super II program, click here.

David Smith, President of CT Aerospace LP shakes hands with Mark Huffstutler, CEO of Sierra
Industries Ltd. Smith is flanked by Russell Starr – President, Killick Capital – Aerospace Fund
and Richard Hipp – VP Corporate Engines. To the right of Mr. Huffstutler is Bill Micale - CFO
and Andres Gutierrez - COO of the Skyway Group.

NEWS RELEASE

Sierra Industries, Ltd. 122 Howard Langford Drive Uvalde, Texas 78801 www.sijet.com
Sierra Industries is a 23 year old aviation modification and maintenance specialist serving
Citation owners worldwide. The highly trained and capable staff performs maintenance and
inspection services on over 350 Citations each year.
The world leader in Citation Performance Enhancement Modifications, Sierra Industries offers
the Eagle and Longwing modifications and more recent innovations such as the Williamspowered
FJ44 Stallion and Eagle II, as well as over 300 other products and enhancements to
maximize the value and utility of Cessna Citation business jets. ) including EASA approvals,
offering inspection and maintenance services for Cessna Citations through the model 650.
More information is available at their website, www.sijet.com.

CT Aerospace LP, headquartered in Carrollton, Texas is a privately-held, highly respected
company providing a wide variety of products and services for the aviation industry. CT
purchases, overhauls (via third-party FAA certified MRO facilities) and sells new and used
aircraft engines and engine parts to a wide variety of customers including MRO facilities, leasing
companies, aircraft operators and other engine parts distributors and dealers throughout the
world. Additionally, in its 55,000 square foot facility, CT offers an extensive inventory of aircraft
engines and engine parts to its customers. The Company also provides leasing options on
aircraft engines to aircraft operators and MRO facilities.
For more details, visit their website at www.ctaerospace.com.
For further information:
Contact: Jim Gerrish, Marketing Manager at Sierra Industries 1-888-835-9377
Contact: David Smith, President at CT Aerospace (972) 241-1071

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