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72-600 > FMS > Flashcards

FMS Flashcards

1
Q

FMS …

A

Flight Management System

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2
Q

The FMS (software and database) is embedded in …

A

DU 2 and 4

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3
Q

The FMS is mainly interfaced with …

A

2 MCDU

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4
Q

FMS makes predictions for … based on …

A
  • time, fuel, weight
  • 2 winds:
  • – simplified: average between airports
  • – accurate: insertion of 4 winds at different levels
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5
Q

The speeds computed by the FMS are continuously updated and available, according to the A/C …

A

Weight

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6
Q

Both FMS receives information such as :

A
  • GPS signal
  • Radio Navigation signal
  • AHRS
  • ADC
  • RA
  • FF
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7
Q

MCDU …

A

Multi-purpose Control Display Unit

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8
Q

MCDU allows access to the following systems :

A
  • FMS (Flight Management System)
  • RMS (Radio Management System)
  • ACARS (Aircraft Communication Addressing and Reporting System)
  • ACMS (Aircraft Condition Monitoring System)
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9
Q

FMC via MCDU have … modes of operation, and they are …

A
  • 3 modes

- dual, independent, single

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10
Q

DTO is used for …

A

Direct to a point in the FPLN, or a new point can be inserted

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11
Q

PERF key gives access to the following pages :

A
  • Take-off page
  • Cruise page
  • Approach page
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12
Q

RNP and ANP can be found in the …

A

PROG second page

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13
Q

M or T in the upper left corner of the MCDU, stand for …

A

Magnetic / True

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14
Q

BCP …

A

Best Computed Position

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15
Q

Font size on the Multi-purpose Control and Display Unit represents …

A
  • Small - FMS computed data

- Large - manually entered data

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16
Q

ETE …

A

Estimated Time Enroute (remaining flight time until the corresponding fix)

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17
Q

EFOB …

A

Estimated Fuel On Board

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18
Q

Dead Reckoning uses information from …

A

dual ADC and dual AHRS

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19
Q

Position computations modes are …

A
  • BCP (Best Computed Position)

- GPS

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20
Q

RNP …

A

Required Navigation Performance

System navigation position error =< the RNP value for 95% of the flight time.

21
Q

FTE …

A

Flight Technical Error

22
Q

FTE is …

A

A flight demonstrated value or a conservative value given by regulations.
The FTE with AP on is small relative to the usual RNP values. It may become relevant to RNP < 3.0 NM

23
Q

HDOP …

A

Horizontal Dilution Of Precision

24
Q

HDOP refers to …

A

The quality of the geometrical satellite constellation.

EPE = HDOP x measurement accuracy

25
Q

HDOP ratings …

A
  • 1 Ideal
  • 1-2 Excelent
  • 2-5 Good
  • 5-10 Moderate
  • 10-20 Fair
  • > 20 Poor
26
Q

HIL means … and represents …

A
  • Horizontal Integrity Limit
  • a circle surrounding the A/C protecting it from any unbearable failures (satellite, ground, receiver), assured to contain the indicated horizontal position
27
Q

HIL values in different flight areas:

  • ENROUTE …
  • TERMINAL …
  • APPROACH …
A
  • 2 NM
  • 1 NM
  • 0.3 NM
28
Q

RAIM …

A

Receiver Autonomous Integrity Monitor

29
Q

FDE means … and does ….

A
  • Fault Detection and Exclusion
  • Detects the presence of an unacceptable position error for a mode of flight or a satellite which can affect the navigation.
    It then excludes the source of the unacceptably large pseudo range error, allowing navigation to return to normal performance without an interruption in service.
30
Q

Best Computes Position (BCP) represents …

A

The most accurate position with a mix of all available and selected localization sensors on board (GPS, VOR, DME, ADC and AHRS)

31
Q

Computation from the BCP.
Green GPS is the position from …
Blue GPS is the position from …

A
  • GPS + VOR + DME

- Only GPS

32
Q

PRAIM …

A

Predictive Receiver Autonomous Integrity Monitor

33
Q

Speed management

Speed has … colors, they are …, and each represents …

A
  • 2
  • Magenta, Blue
  • Auto and Manual
34
Q

The parameters used to compute speed are …

A
  • A/C position, altitude
  • Phase of flight
  • AFCS modes
  • A/C configuration (weight, flaps and gear, PWR MGT, one eng out detection etc.)
  • Weather (icing conditions, APM, wind at destination etc.)
  • FMS parameters (time and speed constraint, holding etc.)
35
Q

FF Factor means … and is usually set at …

A
  • Fuel Flow Factor (increases predicted fuel used along the flight plan to take into account the aging og the engines )
  • 3 %
36
Q

FMS model …

A

FMS 220 THALES

37
Q

Coordinate DMH …

A

Degree Minute and Hundredths of minute

38
Q

UNDO in the FMS when inserting a FPLN, gives the possibility to undo the selection for a time of …

A

60 seconds

39
Q

To access the secondary FPLN …

A

Press FPLN 2 times, or 1 time if already in the main FPLN window

40
Q

RTA …

A

Required Time of Arrival

41
Q

QNH for approach cannot be entered when the A/C is …

A

Below the Transition Level in approach

42
Q

ISA MSG appears when …

A

There is no temperature compensation, and the temperature is ISA - 15 deg

43
Q

When compensation is applied …

A

All altitudes are preceded by the letter “C” and true altitude is displayed

44
Q

APP SPD can be selected in the … , and after that it shows … in green.

A
  • APPROACH page

- ACT

45
Q

APP Speed can be selected before … NM from the …

After this point, the speed …

A
  • 2 NM, FAF

- Automatically

46
Q

When a GA is initiated the …

A

Arrival and Missed Approach are automatically copied for a new approach attempt

47
Q

FMS 220, operational domain …

A
  • Lat N/S 89 deg
  • Long no restrictions
  • Max GS 750 KT
  • Altitude -1500FT up to 65000FT
  • P-RNAV, RNAV(GNSS), RNP APP
48
Q

Limit of the HIL during RAIM from where the RNAV APP is not possible, is …

A

0.3 NM

49
Q

RNP 5-2-1, the RAIM shal not be unavailable for more than …

A

5 minutes

72-600 (17 decks)

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