Which of the following is found on an A-sheet?

The correct choice identifies components that are listed on an A-sheet, which serves as a comprehensive overview of specific systems or configurations related to aircraft. An A-sheet typically documents specialized equipment installed on the aircraft, such as the Forward Looking Infrared (FLIR) system, auxiliary fuel tanks, and other relevant features. These components are critical for understanding the aircraft's capabilities and configurations.

For instance, the FLIR system enhances the tactical situational awareness of aircrews by providing real-time imaging in various conditions. Auxiliary fuel tanks are essential for extending the operational range of the aircraft, especially during long missions. The fries bar, which is an essential component in maintaining aircraft performance, is also noted.

In contrast, the other options focus on more general or unrelated systems. GPS and navigation systems are essential but may not be specifically listed on an A-sheet, as they represent standard equipment found across various aircraft rather than additional configurations. Emergency lighting systems, while crucial for safety, are typically documented elsewhere as part of safety and emergency protocols rather than in the A-sheet. Lastly, engine specifications are technical details that may not necessarily relate directly to the unique configurations outlined in an A-sheet but rather are typically found in the aircraft's maintenance manuals or technical orders.