Results
Q1. Which one of the following Secondary Surveillance Radar (SSR) codes should be used by aircraft entering airspace from an area where SSR operation has not been required?
2000
Q2. When Mode C is selected on the aircraft SSR transponder the additional information transmitted is:
flight level based on 1013.25 hPa
Q3. The code transmitted by a SSR transponder consists of:
pulses
Q4. Why is a secondary radar display screen free of storm clutter?
The principle of ‘echo’ return is not used in secondary radar
Q5. What SSR modes are currently in use by ATC?
Mode A and Mode C
Q6. Using SSR, the normal transmission from the ATC transponder in the aircraft consists of
The two pulses received plus an additional number of pulses between them
Q7. The spacing between the two pulses transmitted by an SSR interrogator decides
What mode is used
Q8. The frequency of an SSR ground transmission is:
1030 +/- 0.2 Mhz
Q9. In the SSR terminology “de-fruiting” means
The removal from the display of random responses
Q10. Consider the following statements on SSR Mode S:
All 3 statements are correct
Q11. Which of the following Secondary Surveillance Radar (SSR) codes is used to indicate transponder malfunction?
0
Q12. The ground Secondary Surveillance Radar (SSR) equipment incorporates a transmitter and receiver respectively operating in the following frequencies:
1030 MHz 1090 MHz
Q13. In order to indicate unlawful interference with the planned operation of the flight, the aircraft Secondary Surveillance Radar (SSR) transponder should be selected to:
7500
Q14. What is the maximum number of usable Secondary Surveillance Radar (SSR) transponder codes?
4096
Q15. When an aircraft is operating its Secondary Surveillance Radar in Mode C an air traffic controller’s presentation gives information regarding the aircraft’s indicated flight level that is accurate to within:
+or- 50 FT
Q16. When the ATC transponder “IDENT” button is pressed by the pilot
The airplane’s echo on the controller’s display will flash or “fill in”
Q17. In order to indicate radio failure the aircraft SSR transponder should be selected to code:
7600
Q18. The transponder code set in an SSR system consists of
4 digits, forming any of 4096 different codes
Q19. The frequencies used by SSRs are
Interrogations are transmitted on 1030 MHz and transponder responses are transmitted on 1090 MHz
Q20. A secondary radar can provide up to 4096 different codes. These 4096 codes can be used in:
all modes
Q21. On a typical computer generated SSR display the following data on a particular flight will be shown:
Squawk code, Flight level, Ground speed, Airplane callsign
Q22. The two main design functions of Secondary Surveillance Radar (SSR) Mode S are:
air to ground and ground to air data link communications and improved ATC aircraft surveillance capability
Q23. When both SSR and primary radar is presented on the controller’s display
The primary radar information is more accurate in bearing and distance
Q24. The ATC transponder system, excluding Mode S, contains:
two modes, each of 4096 codes