Radar

Question 1

What does PSR stand for

Answer 1

PRIMARY SURVEILLANCE RADAR

Question 2

Is any additional equipment required for using PSR

Answer 2

NO

No equipment in aircraft required

Aircraft skin reflects the radar signal back to radar head

Question 3

What does SSR stand for

Answer 3

SECONDARY SURVEILLANCE RADAR

Question 4

Is any additional equipment required for using SSR

Answer 4

YES

Aircraft requires a transponder to be installed

Transponder detects it is being “hit” and transmits a UHF signal from the aircraft

Question 5

What frequency band does a transponder trasmit in

Answer 5

UHF

Question 6

What are the 3 Transponder operating modes

Answer 6

1. A (Alpha)
2. A+C (Charlie) [Altitude]
3. A+C+S (Sierra)

Question 7

What is transmitted in Transponder mode A

Answer 7

CODE
as set by pilot

Octal 0 - 7

Question 8

What is transmitted in Transponder mode C

Answer 8

Includes mode A and;
ALTITUDE

Sensed by internal altimeter which is set to 1013 hPa

Question 9

What is transmitted in Transponder mode S

Answer 9

Includes mode A and C and;
HEX CODE

Hex code translates aircraft callsign

Multiple additional information to enhance situational awareness

Question 10

What are the 4 mode selections for a transponder

Answer 10

1. OFF
2. SBY
3. ON
4. ALT

1. OFF - Unit off
2. SBY - Standby, warming up
3. ON - On, transmits the code
4. ALT - On, transmits the code and altitude as a flight level

Question 11

What do the following transponder codes mean

2000 (mode A)
2000
7000
7004
7500
7600
7700
0030

Answer 11

2000 (mode A) - Aerodrom surface, under tow priro to selecting SBY or OFF
2000 - IFR Conspicuity code
7000 - VFR Conspicuity code
7004 - Aerobatic Conspicuity code
7500 - Illegal interference
7600 - Communications (Radio) failure
7700 - Distress
0030 - Lost

Question 12

If lost, what procedure should you follow in terms of what to set on the transponder, and who to contact on what frequency

Answer 12

1. 0030
2. 121.500 MHz
3. London Center

Question 13

What are the 2 button types of transponder

Answer 13

1. Press button
2. Dial

Question 14

If using a dial type transponder, what must a pilot do before chaning the code

Answer 14

SET TO SBY

Set to SBY, chane code, set back to ALT

Question 15

A function that all transponders have, that should only be used when instructed by ATC

Answer 15

IDENT