Keystone Helicopter Structural Engineer Receives DER Certification.

WEST CHESTER, Pa. -- Keystone Helicopter:

--Cassandra Lam joins five other DERs at company's Keytech division

--Keytech, a DAS licensee, growing steadily as a business

Keystone Helicopter, an industry leader in helicopter services for 51 years, announced that Cassandra Lam, a structural engineer with the firm's Keytech division, has received her FAA DER certification.

One of six DERs in the division's group of 42 engineers, Ms. Lam will sign off on STCs for Sikorsky and Agusta completions. "When Cassandra joined us four years ago, we recognized her potential immediately," said Jim Munda, Keystone Helicopter's Vice President--Engineering. "Now, with additional experience and training, she's fully authorized to sign off on projects, to speed throughput and minimize downtime for our customers." Ms. Lam joined the company from SEOS Displays. She received her B.A. in Mechanical Engineering from SUNY Binghamton and her Master's from the University of Arizona. KeyTech is an FAA Designated Alteration Station with capabilities in structures, avionics, design engineering, systems, software and flight testing. The division meets certification requirements including STC, TSO, PMA, and FAA-DER approved data for 337s.

"This certification is another example of our commitment to expanding our DAS capabilities," said David Ford, Keystone Helicopter's President. "In 2001, we had 14 people in engineering and today Keytech has more than tripled that."

"Giving our people the support they need to advance is a key part of our growth strategy," said Steve Townes, CEO of Keystone Ranger Holdings and founder of Ranger Aerospace. "Our engineering teams' continuing growth gives us unique technical and competitive advantages."

About Keystone Helicopter

Keystone Helicopter is one of the largest and oldest helicopter services companies in the United States. Founded in 1953, the firm operates a large technical services depot and completion center near Philadelphia. It also operates a large fleet of turbine helicopters in numerous locations across several eastern states, primarily in the air medical mission. Keystone Helicopter is owned by Keystone Ranger Holdings, Inc., a Philadelphia-area private equity investment organization that specializes in aviation-related ventures. Additional information is available online at: www.keystonehelicopter.com and at www.rangeraerospace.com.