FSB Sign stands for which of the following?

• A. Forward Seat Belt Sign
• B. Flight Safety Belt Sign
• C. Federal Seat Belt Sign
• D. Fasten Seat Belt Sign

Answer: (D)

In airline terminology, signs that prompt passengers to buckle up use a simple verb-and-object phrase. Fasten Seat Belt Sign is the official term, and FSB is the abbreviation you’ll hear. This sign alerts everyone to fasten their seat belts, especially during takeoff, landing, and periods of turbulence. The other options aren’t the standard wording used in aviation, so they don’t match the established phrase. Forward Seat Belt Sign isn’t used, Flight Safety Belt Sign isn’t the conventional term, and Federal Seat Belt Sign isn’t the accepted phrasing.