Take the case of PSA Airlines, whose name links to its past, short-lived operations in the Pacific Southwest. The regional carrier, now a US Airways Group subsidiary and part of the US Airways Express network, serves about 65 eastern locations such as Charlotte, North Carolina; Dayton, Ohio; and Knoxville, Tennessee. It connects smaller markets with US Airways hubs like Charlotte and Philadelphia. PSA maintains a fleet of about 50 Canadair regional jets (CRGs) made by Bombardier. Overall, the US Airways Express carriers, including fellow subsidiary Piedmont Airlines and several independent lines, operate about 330 aircraft, comprising turboprops as well as CRGs.

Universal Avionics' products, used worldwide on helicopters, corporate turbine aircraft, and large commercial airliners, include cabin information and entertainment systems, cockpit instrument displays and voice recorders, radio control units, cockpit-to-ground communications data links, flight management systems, navigation position sensors, satellite communications, and terrain awareness and warning systems. The company also offers technical support, customer training, rental equipment, and repairs.

Gol Linhas Aereas Inteligentes S.A. provides air transportation services for passengers, cargo, and mail bags in Brazil and South America. The company operates domestic and international flights. As of April 3, 2009, it offered approximately 800 daily flights to 49 destinations connecting various cities in Brazil and 10 destinations in South America. Gol Linhas Aereas Inteligentes S.A. was founded in 2001 and is based in Sao Paulo, Brazil.

L-3 Vertex provides aviation and aerospace technical services, primarily for U.S. Government customers. The company has more than 11,000 employees at 300 locations worldwide (36 states and 33 countries) supporting 3,500 military and government aircraft and systems (89 distinct aircraft types.)L-3 Vertex began as Beech Aerospace Services, Inc. (BASI) in 1977, with name changes to Raytheon Aerospace in 1995, Vertex Aerospace in 2001 and finally to L-3 Vertex Aerospace in December, 2003. The company is a subsidiary of L-3 Communications (NYSE: LLL) and is part of the L-3 Integrated Systems group.

United Space Alliance (USA) is a space-race heavyweight (each of the Space Shuttles -- Discovery, Atlantis, and Endeavour -- weighs 173,000 pounds). A joint venture between Lockheed Martin and Boeing, USA was established in 1996 to consolidate NASA's various Space Shuttle contracts under a single entity. As prime contractor, the company is involved in mission operations, astronaut and flight controller training, flight software development, Shuttle payload integration, and vehicle processing, launch, and recovery operations. USA also provides training and operations planning for the International Space Station. Its main operations are at the Johnson Space Center (Texas) and Kennedy Space Center (Florida).

Through the air above the ice, Icelandair serves some two dozen destinations in about 15 countries in Europe and North America, including four locations in the US and two in Canada. The carrier, which operates a fleet of about 10 Boeing 757s, has a code-sharing agreement with Finnair whereby the two airlines sell tickets on each other's flights and thus extend their networks. Icelandair is part of Icelandair Group, which also includes cargo, ground services, tourism, and aircraft leasing businesses; the group maintains a fleet of about 60 additional aircraft. Icelandair first took wing in 1937.

The legendary Flying Dutchman sails on alone, but KLM Royal Dutch Airlines is part of Air France-KLM, Europe's largest airline company. KLM and Air France operate from their respective hubs in Amsterdam and Paris as independent carriers, but they are working to coordinate their businesses. KLM flies to 250 destinations and operates 190 planes, including about 55 used for its KLM Cityhopper charter operations. It also owns two subsidiaries based in the Netherlands that offer budget charter and scheduled flights: Transavia and Martinair. Air France and KLM extend their worldwide networks as members of the SkyTeam alliance, which also includes carriers such as Alitalia, China Southern, and Korean Air Lines.

Esterline Corporation is a specialized manufacturing company serving principally aerospace and defense markets. Approximately 80% of total revenues are generated from aerospace/defense markets. The remaining 20% is from the application of these technologies into industrial markets. Esterline management views the company’s businesses in three segments related to its set of core competencies: Avionics & Controls, Sensors & Systems, and Advanced Materials. Operations within the Avionics & Controls segment focus on technology interface systems for commercial and military aircraft and similar devices for land- and sea-based military vehicles, secure communications systems, specialized medical equipment, and other high-end industrial applications. The Sensors & Systems segment includes operations that produce high-precision temperature and pressure sensors, fluid and motion control components, and other related systems principally for aerospace and defense customers. Advanced Materials focuses on process related technologies including high-performance elastomer products used for a wide range of military and commercial aerospace purposes and combustible ordnance and electronic warfare countermeasure products. Our business focus is to help our customers achieve greater productivity, higher precision, and better overall performance. More simply put: Esterline helps its customers compete with maximum effectiveness.

Unison Industries, LLC is a wholly owned subsidiary within GE's Aviation business unit. Unison is a leader in the design and manufacture of electrical components, sensors, and systems for aircraft, industrial, marine, and space uses.Unison is a global provider and Tier-1 Systems Integrator of turbine ignition systems, wiring harnesses, engine-dedicated alternators, piston ignitions, sensors, switches, and metal tubing and ducting. Headquartered in Jacksonville, Florida, Unison operates manufacturing facilities and logistics centers worldwide.

Boeing Satellite Systems International is happiest when its products are far, far away. The company is a contracting unit for commercial spacecraft within Boeing's Space & Intelligence Systems division. It manufactures communications, meteorological, military, and research satellites. Boeing Satellite Systems International built the world's first geosynchronous communications satellite (Syncom); since its inception in 1961, the company estimates that it has manufactured almost 40% of all the communications satellites in commercial service today. Typical satellite applications include weather forecasting, radar mapping, telecommunications, satellite television, and national security.

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