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From build to buy: American Airlines changes modernization course midflight

Robert L. Mitchell and Johanna Ambrosio | Jan. 3, 2013
American Airlines was well into a simultaneous revamp of its Passenger Services System (PSS) and Flight Operating System (FOS), its two most mission-critical families of applications, when the airline changed course last January.

"Flight Hub is a hybrid. It provides ESB capabilities and provides services to other applications," and passes data to and from the mainframe, Hassell says. In this way, it can pass data to and from any application and keep all data in synch.

After completing Flight Hub, American created a new relational data store to hold flight operations data, and began bringing in new applications. Hassell's team has been rewriting or replacing existing mainframe FOS applications for Flight Hub, one at a time, as well as writing and acquiring new ones. "Horizon was not keen on writing applications. Our strategy from the beginning was buy versus build," she says. "We continue to be thoughtful about which applications should be built." So far American has 22 applications deployed, with 20 in development, and has connected a total of 55 applications to Flight Hub, including the Web site.

Around 20% of the completed applications were written from scratch, Hassell says; the rest were purchased and modified as needed.

The latest applications include:

A revamp of the Aircraft Communications Addressing and Reporting System (ACARS), which allows text-based messaging between the cockpit and the personnel -- usually the dispatcher responsible for that flight, or operations. American runs ACARS on AIRCOM Server, an off-the-shelf product it acquired from Geneva-based SITA.

A tool that shows aircraft locations on the taxiway.

A mobile crew check-in app.

An aircraft tracking application with routes of flight for dispatchers.

"We can seamlessly pass information to all of those applications and we don't have to modify them any more from an integration perspective," Hassell says.

American also deployed a new flight-following tool. Users, primarily dispatchers and the operations towers at some airports, "have the ability to talk to our airplanes in the air and report more efficiently any information regarding specific weather situations or something where they need to alert more than one aircraft," Hassell explains.

In some cases American has been able to buy instead of build, with little or no customization required. One example is ACARS. Previously, those functions were written entirely on the mainframe in a proprietary language called SabreTalk. With the new software architecture, Hassell says, "We were able to deploy [new functionality] much faster and take advantage of the new technology."

American's partners, its Oneworld carriers, will also benefit from enhanced operational information sharing, as will their customers. "We are able to help them have a seamless experience," Hassell says, by doing development work to make sure American can share detailed flight information with each Oneworld airline's systems.

A matter of timing

American continues to chip away at both projects, one application at a time, with the ultimate goal of creating a more flexible and dynamic set of core systems and associated applications that can help the airline innovate. "The new systems are designed to fundamentally improve both the customer and the employee experience, which will lead to increased loyalty and revenue," Leibman says.


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