ASR

1. Airport surveillance radar
2. Air-sea rescue
3. Automatic send and receive (or answer, send and receive)

• time sheet
• time sheets
• time signal
• time signals
• time signature
• time signatures
• times immemorial
• time slice
• time slices
• time slot
• time slots
• time spirit
• time spirits
• timestamp
• timestamped
• timestamping
• timestamps
• time switch
• time switches
• timetable
• timetabled
• timetables
• timetabling
• time-thrust
• time-thrusts