Prior to push back from an airport jetway, the FE executes what is called a ground "walk-around." This process involves examining a host of critical flight safety components, including checking for fluid leaks, opening all external panels to secure any wiring or internal components, and examining the wheels and tires.
In the airplane, the FE is part of a cockpit team made up of the captain, first officer and second officer (the FE). In this role, the crew member works with the other crew members to execute all pre-flight cockpit checks and sets up all switches necessary for pre-start and start-up.
Once airborne, the FE monitors all aircraft engineering components associated with the airplane. Other than flying the airplane itself, the FE is responsible for responding to any malfunction or other concern.
The FE again executes a post-flight "walk-around" to insure that the airplane is secured for maintenance, or properly set up for a next crew hand-off evolution. Once this process is completed, the FE completes all paperwork, logs the flight and files all information with local dispatch.
Many of today's multiple-engine commercial aircraft require three crew members to handle the myriad of tasks and active processes associated with commercial operations. As a result, the FAA requires FE throughout all commercial domestic and international routes.