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Radar > Lesson 31 > Flashcards

Lesson 31 Flashcards

1
Q

A target is considered paired when…

A

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

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2
Q

A target is considered unpaired when…

A

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

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3
Q

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

A

Weak; strong

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4
Q 
Position symbols:
diamond:
triangle: 
#:
H:
hourglass:
A

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

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5
Q

Velocity vector

A
  • 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
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6
Q

Leader line

A

connects the position symbol with the FDB

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7
Q

Field A

A
  • 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
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8
Q

Field B

A

assigned altitude information

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9
Q

C

A

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

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10
Q

+/-

A

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

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11
Q

/

A

flight type is VFR

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12
Q

N

A

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

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13
Q

A

A

Controller-entered reported altitude equals single assigned altitude

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14
Q

X

A

Mode C altitude is corrupt or lost

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15
Q

B

A

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

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16
Q

V

A

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

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17
Q

T

A

interim altitude

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18
Q

C4 position contains # when…

A
  • 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
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19
Q

C4 position contains X when…

A

exceptional vertical rate (EVRI)

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20
Q

climb arrow in coral box

A

non-rvsm a/c

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21
Q

Field D

A

CID

R-do not have track control

22
Q

Field E

A

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

23
Q

EMRG

A

a/c squawking emergency

24
Q

RDOF

A

a/c squawking radio failure

25
Q

FAIL

A

attempted handoff of FDB to another facility has failed

26
Q

OLD

A

updated data is not being received

27
Q

MISM

A

mismatch between two ERAM facilities’ track position

- inform the FLM

28
Q

DATA

A

mismatch between ERAM and non-ERAM facility

- verify position of target

29
Q

FRZN

A

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
30
Q

HOLD

A

a/c has been put into hold at data blocks present point

- position symbol changes to H

31
Q

SIDE

A

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

32
Q

CST

A

a/c is in coast status, not tracked by computer

- position symbol changes to #

33
Q

NONE

A

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

34
Q

3321

A

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

35
Q

H-dd (H-12)

A

track is being handed off to sector in same center

36
Q

O-dd (O-12)

A

handoff has been accepted by sector in same center

37
Q

K-dd (K-12)

A

handoff has been ‘stolen’ using /OK

38
Q

HLdd (HF30)

A

track is being handed off to another center

39
Q

OLdd (OF30)

A

handoff has been accepted by another center

40
Q

HJ1S

A

track is being handed off to ARTS facility

41
Q

OJ1S

A

handoff has been accepted by ARTS facility

42
Q

Field F

A
  • variable data field

- may contain a/c type/equipment, destination, heading, speed

43
Q

Field F: headings

A

H by three digit number

H050, H180/JAX, H300/J79

44
Q

Field F: assigned speeds

A

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

45
Q

Field F: weather deviations

A

D followed by a letter

  • L left of course
  • R right of course
  • D30L deviating 30 deg left
46
Q

Field F: request for altitude/route change

A

RQ followed by altitude

RQ followed by a slant and a specific fix

47
Q

HSF display

A

heading/speed/free form display/suppress indicator

48
Q

paired limited data block displays…

A

acid and mode C altitude

49
Q

unpaired limited data block displays…

A

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
50
Q

NEXRAD wx display

A

moderate: purple
heavy: checkered cyan
extreme: cyan

Radar (10 decks)

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