Results
Q1. The code transmitted by a SSR transponder consists of:
pulses
Q2. In order to indicate radio failure the aircraft SSR transponder should be selected to code:
7600
Q3. The frequencies used by SSRs are
Interrogations are transmitted on 1030 MHz and transponder responses are transmitted on 1090 MHz
Q4. When Mode C is selected on the aircraft SSR transponder the additional information transmitted is:
flight level based on 1013.25 hPa
Q5. 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
Q6. What SSR modes are currently in use by ATC?
Mode A and Mode C
Q7. The ATC transponder system, excluding Mode S, contains:
two modes, each of 4096 codes
Q8. A secondary radar can provide up to 4096 different codes. These 4096 codes can be used in:
all modes
Q9. 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
Q10. The spacing between the two pulses transmitted by an SSR interrogator decides
What mode is used
Q11. The frequency of an SSR ground transmission is:
1030 +/- 0.2 Mhz
Q12. 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
Q13. When both SSR and primary radar is presented on the controller’s display
The primary radar information is more accurate in bearing and distance
Q14. The ground Secondary Surveillance Radar (SSR) equipment incorporates a transmitter and receiver respectively operating in the following frequencies:
1030 MHz 1090 MHz
Q15. In the SSR terminology “de-fruiting” means
The removal from the display of random responses
Q16. Consider the following statements on SSR Mode S:
All 3 statements are correct
Q17. 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
Q18. 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
Q19. Why is a secondary radar display screen free of storm clutter?
The principle of ‘echo’ return is not used in secondary radar
Q20. 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”
Q21. The transponder code set in an SSR system consists of
4 digits, forming any of 4096 different codes
Q22. What is the maximum number of usable Secondary Surveillance Radar (SSR) transponder codes?
4096
Q23. Which of the following Secondary Surveillance Radar (SSR) codes is used to indicate transponder malfunction?
0
Q24. 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
