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Dash 8 Q300/200 > FMS > Flashcards

FMS Flashcards

1
Q

How many satellites for a 3-D fix ?

A

Four

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2
Q

What does RAIM stand for?

A

Receiver autonomous integrity monitoring

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3
Q

What does RAIM do?

A

Generates fixes from each possible combination of satellites to detect unreliable or inconsistent data

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4
Q

What happens if one satellite seems to offer bad data?

A 
Fault detection (FD) only: loss of integrity: use alternate nav aid.
Fault detection and exclusion (FDE): software excludes the satellite no affect on navigation
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5
Q

What’s the difference between a loss of RAIM and a RAIM warning?

A

Loss of RAIM means a GNSS position error can’t be calculated and the level of integrity is not known

A RAIM warning mean the GNSS position error is outside tolerance and the level of integrity is known to be unacceptable.

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6
Q

What’s the response to any RAIM event on approach?

A

Missed approach, DR if required

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7
Q

Response to a RAIM event any time you’re not on approach?

A

Use another means of navigation, climb above MSA when in a CTA tell ATC after one minute of RAIM warning/DR mode. in CTA tell ATC after five minutes of loss of RAIM

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8
Q

What phraseology do you use during a RAIM failure?

A

“QLINK 456 RAIM failure”

“QLINK 456 RAIM Restored “

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9
Q

Can the availability of our GNSS receiver be considered for our alternate ?

A

No, only for our destination.

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10
Q

Regardless of the reason for requiring an alternate what do we require to track and fly an approach at our alternate ?

A

Conventional NAV AIDS

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11
Q

What if FD is not available ?

A

Carry RAIM holding fuel. Hold for an actual RAIM outage not for a predicted outage.

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12
Q

At our destination how many NAV aids do we need?

A

At least two

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13
Q

What type of NAV aids can we choose from for our destination ?

A

FMS, VOR1, VOR2, ADF1,ADF2

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14
Q

Who issues RAIM predictions ?

A

US Coastguard and its a 72 hour forecast

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15
Q

When reading RAIM predictions, FD outages greater than how long must be considered ?

A

5 minutes.

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16
Q

All en- route navigation is now RNP what?

A

2

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17
Q

To fly Route LSALT requires what ?

A

RNP 2 tolerances to be flown

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18
Q

Does grid LSALT require RNP 2 ?

A

No

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19
Q

Terminal operations are slowly becoming what ?

A

RNP 1

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20
Q

RNP APCH-LNAV = what ?

A

RNAV(GNSS) approach

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21
Q

Is the VNAV approved at Qlink?

A

No.

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22
Q

What’s the requirement when using the FMS to steer the aircraft below LSAlt ?

A

Any procedure must be contained in the database

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23
Q

If the SID or STAR is based on a VOR/NDB, monitor what ?

A

RMI or bearing pointers

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24
Q

Approaches: NAV source to VOR/LOC for everything except what ?

A

RNP app

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25
Q

Hardware type FMS ?

A

Single UNS-1C+

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26
Q

When initialising the FMS What should you check ?

A

SCN 802.8
Database expiry
Initial position ID with GPS

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27
Q

A leg based navigation system has both what ?

A

A path and a terminator

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28
Q

Sequencing to the next leg occurs at the terminator, what may stop this from Happening ?

A

Manual terminator or GAP, NO LINK

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29
Q

What message will you get if sequencing to the next leg is not available ?

A

Next leg undefined

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30
Q

What does RAIM monitor during flight and when will you get a RAIM warning ?

A

Monitors the spread of positions ( Horizontal integrity limit ) expressed in NM. you get a RAIM warning when HIL>Integrity alarm limit.

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31
Q

What does GPS INTEG mean ?

A

Horizontal integrity limit HIL is unknown or the HIL>alarm limit

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32
Q

What do you do about a GPS INTEG ?

A

GNSS receiver not to be used

Missed approach, or if RNP 1 or RNP 2 routes, use alternate route.

33
Q

What’s BCP accuracy monitoring ?

A

Monitors actual spread of positions (all sensors) and is the Actual Navigation Performance ANP expressed in Nm

34
Q

What does it mean if ANP>RNP ?

A

Spread of positions to large for phase of flight and your position is uncertain.

35
Q

What’s the meaning of a position uncertain message ?

A

Definite GPS INTEG and possible DR mode.

Means that ANP>RNP

36
Q

What’s the meaning of dead reckoning mode (DR) ?

A

HDG and TAS are the sole Nav sensors.

37
Q

What actions do you take when you get a position uncertain or dead reckoning mode alert ?

A

Navigate by raw data, not the FMS

38
Q

Sensor priority in terms of degrading quality and priority ?

A

GNSS, DME/DME/DME, VOR,AIR DATA and AHRS (TAS and HDG)

39
Q

Enroute RNP, IAL and CDI full scale deflection ?

A

RNP: 2.8
IAL: 1.0
CDI full scale: 5.0

40
Q

Terminal RNP, IAL and CDI full scale deflection ?

A

RNP: 1.0
IAL: 1.0
CDI full scale: 1.0

41
Q

Approach RNP, IAL and CDI full scale deflection ?

A

RNP:0.5
IAL:0.3
CDI full scale: 0.3

42
Q

For FMS when is APPR mode active ?

A

Approach label to end of Approach label

43
Q

When is the FMS in terminal mode ?

A

Within 30nm of airports at the beginning and end of routes.

Anytime the approach is armed

44
Q

If a SID extends greater than 30nm what must the pilot do ?

A

Manually enter TERM mode NAV-MENU-NAV DISPLAY (LSK1L) -TERM

Normal mode once the SID is complete

45
Q

When must you manually update the FMS database ?

A

If today= database expiry day

46
Q

How to manually update the FMS Data base ?

A

DATA Mode key
Line select 1 L:NAV DATA
Then NEXT key
Line select 1R: activate

47
Q

What to do if you have a power failure of the FMS ?

A

<7 seconds: auto resumes nothing for you to do
From 7 s to 7 mins: power failure screen, must verify current leg and wind
> 7 mins: must re initialise, re Aquire GPS position and re enter FPL, fuel, etc

48
Q

What inputs the FMS and what does it output ?

A

Inputs to the FMS are GNSS,DME,VOR,HDG,TAS,ALT

outputs to the #1 and #2 FGC And then to the EADI and EHSIs

49
Q

When do you get A waypoint alert?

A

Approaching terminator
Steadily on, including the EHSI
15 sec (ENR,TERM)
5 sec (APPR)

50
Q

When will you get a VERT W/P ALERT ?

A

Approaching the vertical wpt
Not EHSI
15 secs

51
Q

How to set FLT NBR ?

A

FPL-MENU p2- LSK 3 R

52
Q

How to prevent auto-sequencing of waypoints ?

A

Insert a GAP in the FPL

53
Q

What mode does the autopilot stay in when using command HDG ?

A

LNAV

54
Q

When’s Pseudo-VOR used ?

A

When needed to track on a non-FPL radial or bearing.

55
Q

How to define a PVOR course ?

A

NAV-LSK MNVR-LSK PVOR
Reference the fix
Define desired track
Accept with ENTER

56
Q

How to setup a selected Cross-Track ?

A

NAV-LSK “MNVR” -LSK “SXTK”
Enter desired cross track distance L/R
FMS commands 45° intercept of new parallel track path
Maintains Crosstrack offset only until next waypoint.
Then intercepts next leg

57
Q

How is our VNAV setup ?

A

Pilot specifies ROD
FMS calculates FPA
FMS maintains FPA with changing GS,VS

58
Q

When do you get a TOD alert ? And will the aircraft start to descend even if AAS is not set ?

A

2 mins to go and yes it will

59
Q

Changes to current VNAV leg cause what ?

A

VNAV disconnect and the aircraft to go into PITCH mode.

60
Q

Level off logic of VNAV ?

A

At AAS or VNAV target, whichever comes first

61
Q

When would you get an VNAV disconnect ?

A

GAP/NO LINK / HOLD between you and the VNAV target altitude
>12.5 NM off track
Any climb segment
At approach label > 175’ above pseudo- GS

62
Q

Checking VNAV enroute decent ?

A

3nm / 1000’ 15,000ft to lose 15×3 = 45 nautical miles descent

63
Q

Checking VNAV from IAF ?

A

Assume 3°
320 ft/nm
From IAF to FAF 10nm, 3200ft
From IF to FAF 5nm ,1600ft

64
Q

How long before the fix does the FMS calculate the Entry, size of HOLD ?

A

15 s

65
Q

When can you ARM the APPR ?

A

50nm

66
Q

When does the APPR arm Automatically ?

A

30nm

67
Q

When does ACT approach become available ?

A

30nm

68
Q

When the APPR is armed what does the FMS do ?

A

Activates Terminal mode and does a RAIM prediction for the APPR

69
Q

What counts as the APP phase ?

A

Between the APPR labels

70
Q

Activated APP if what occurs ?

A

APPR Armed
RAIM available
Past the APP label
Less than 80 degrees track error

71
Q

Annunciator things to note when the APP is activated ?

A

RNAV App in green on glareshield

72
Q

FMS things to note when APP is activated ?

A

Scale change alert has come and gone
YMAY RNV 25 in blue
Green A for app
CNCL APP becomes available

73
Q

Inside the APP label what is automatic and what is available ?

A

ACT APP is automatic

CNCL APP is available

74
Q

Inside the FAF what is still active and what is available ?

A

The APP is still active and the MISSD APP is available

75
Q

What are the two ways to sequence the MISSD APP ?

A

The LSK MISSD APP

or the GA button

76
Q

Choosing the APP ?

A

FPL - MENU - ARRIVE

77
Q

3 things when checking the FMS on first screen ?

A

802.8
Expiry date
And GPS

78
Q

What’s Astrix on the missed approach mean ?

A

Fly over waypoint

Dash 8 Q300/200 (74 decks)

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