Lesson 31

Question 1

A target is considered paired when…

Answer 1

the computer correlates the predicted position, speed and heading with the actual radar return using flight plan information

Question 2

A target is considered unpaired when…

Answer 2

the computer is NOT correlating the a/c with flight plan information and is using radar data ONLY

Question 3

For unpaired primary targets, “.” means the target is _____ and “+” means the target is ____

Answer 3

Weak; strong

Question 4

Position symbols:
diamond:
triangle: 
#:
H:
hourglass:

Answer 4

FLAT track- Flight Plan Aided Tracking
Free track- use of radar data without the use of flight plan info
Coast track-tracking program has lost contact with the radar target
Hold at a fix or present position hold
Frozen data block - a/c track is frozen at its present position, on approach

Question 5

Velocity vector

Answer 5

• represents the distance and direction the a/c will travel
• based on computer ground speed and track
• does not represent change in speed or turn

Question 6

Leader line

Answer 6

connects the position symbol with the FDB

Question 7

Field A

Answer 7

• A1 through A8, begin at A2 (always a letter)
• ^ over A2: a/c entered another sector without a handoff being made
• ^ over A3: a/c will not auto-handoff

Question 8

Field B

Answer 8

assigned altitude information

Question 9

C

Answer 9

Mode C reported altitude is within +/- 200 ft of single assigned altitude

Question 10

+/-

Answer 10

Mode C has reported the a/c at assigned altitude and a/c has deviated 300 ft or more above/below assigned altitude

Question 11

/

Answer 11

flight type is VFR

Question 12

N

Answer 12

neither controller-entered nor Mode C reported altitude has been received for a/c

Question 13

A

Answer 13

Controller-entered reported altitude equals single assigned altitude

Question 14

X

Answer 14

Mode C altitude is corrupt or lost

Question 15

B

Answer 15

Mode C reported altitude is within 200 ft of upper or lower limit of block altitude

Question 16

V

Answer 16

Mode C is received or controller-entered reported altitude but no assigned altitude exists

Question 17

T

Answer 17

interim altitude

Question 18

C4 position contains # when…

Answer 18

• a/c is not responding with mode C altitude
• controller-entered altitude does not equal the single assigned altitude
• a/c is leaving altitude for assigned altitude

Question 19

C4 position contains X when…

Answer 19

exceptional vertical rate (EVRI)

Question 20

climb arrow in coral box

Answer 20

non-rvsm a/c

Question 21

Field D

Answer 21

CID

R-do not have track control

Question 22

Field E

Answer 22

Ground speed
- time sharing basis if an additional item becomes eligible for display
special condition information relative to status of a/c

Question 23

EMRG

Answer 23

a/c squawking emergency

Question 24

RDOF

Answer 24

a/c squawking radio failure

Question 25

FAIL

Answer 25

attempted handoff of FDB to another facility has failed

Question 26

OLD

Answer 26

updated data is not being received

Question 27

MISM

Answer 27

mismatch between two ERAM facilities' track position | - inform the FLM

Question 28

DATA

Answer 28

mismatch between ERAM and non-ERAM facility | - verify position of target

Question 29

FRZN

Answer 29

controller-entered message that indicates the flights position is not being updated - position symbol changes to an hourglass - track position freezes - Mode C no longer displayed

Question 30

HOLD

Answer 30

a/c has been put into hold at data blocks present point | - position symbol changes to H

Question 31

SIDE

Answer 31

a/c is in side stream handoff status to another ERAM facility

Question 32

CST

Answer 32

a/c is in coast status, not tracked by computer | - position symbol changes to #

Question 33

NONE

Answer 33

a/c has an assigned beacon code but none is received

Question 34

3321

Answer 34

a/c has an assigned beacon code but the code received is not the proper code. Improper code is displayed

Question 35

H-dd (H-12)

Answer 35

track is being handed off to sector in same center

Question 36

O-dd (O-12)

Answer 36

handoff has been accepted by sector in same center

Question 37

K-dd (K-12)

Answer 37

handoff has been 'stolen' using /OK

Question 38

HLdd (HF30)

Answer 38

track is being handed off to another center

Question 39

OLdd (OF30)

Answer 39

handoff has been accepted by another center

Question 40

HJ1S

Answer 40

track is being handed off to ARTS facility

Question 41

OJ1S

Answer 41

handoff has been accepted by ARTS facility

Question 42

Field F

Answer 42

- variable data field | - may contain a/c type/equipment, destination, heading, speed

Question 43

Field F: headings

Answer 43

H by three digit number | H050, H180/JAX, H300/J79

Question 44

Field F: assigned speeds

Answer 44

S followed by a three digit number symbol + maintain specified speed or greater symbol - maintain specified speed or less S250, S230+, M82-

Question 45

Field F: weather deviations

Answer 45

D followed by a letter - L left of course - R right of course - D30L deviating 30 deg left

Question 46

Field F: request for altitude/route change

Answer 46

RQ followed by altitude | RQ followed by a slant and a specific fix

Question 47

HSF display

Answer 47

heading/speed/free form display/suppress indicator

Question 48

paired limited data block displays...

Answer 48

acid and mode C altitude

Question 49

unpaired limited data block displays...

Answer 49

beacon code and mode C altitude if available - does not show code for VFR a/c squawking 1200 (target symbol V) - does NOT contain acid

Question 50

NEXRAD wx display

Answer 50

moderate: purple heavy: checkered cyan extreme: cyan