Which symbol indicates a restriction during flight?

Which symbol indicates a restriction during flight?

• A. O
• B. Δ
• C. ⊗
• D. X

Answer: (C)

A circled cross signals a restriction during flight. The circle around the X makes the prohibition explicit, showing that a certain action or condition is not allowed when the aircraft is in flight. This visual cue is used in flight-related documentation to quickly communicate a constraint that must be observed in the air. The other symbols don’t carry that same flight-specific restriction meaning: a plain circle might mean OK or open in different contexts, the delta indicates change, and a plain X is a general mark of not allowed but lacks the formal flight-restriction emphasis that the circled cross provides.

A circled cross signals a restriction during flight. The circle around the X makes the prohibition explicit, showing that a certain action or condition is not allowed when the aircraft is in flight. This visual cue is used in flight-related documentation to quickly communicate a constraint that must be observed in the air. The other symbols don’t carry that same flight-specific restriction meaning: a plain circle might mean OK or open in different contexts, the delta indicates change, and a plain X is a general mark of not allowed but lacks the formal flight-restriction emphasis that the circled cross provides.