FMS

Question 1

FMS …

Answer 1

Flight Management System

Question 2

The FMS (software and database) is embedded in …

Answer 2

DU 2 and 4

Question 3

The FMS is mainly interfaced with …

Answer 3

2 MCDU

Question 4

FMS makes predictions for … based on …

Answer 4

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

Question 5

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

Answer 5

Weight

Question 6

Both FMS receives information such as :

Answer 6

• GPS signal
• Radio Navigation signal
• AHRS
• ADC
• RA
• FF

Question 7

MCDU …

Answer 7

Multi-purpose Control Display Unit

Question 8

MCDU allows access to the following systems :

Answer 8

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

Question 9

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

Answer 9

• 3 modes

- dual, independent, single

Question 10

DTO is used for …

Answer 10

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

Question 11

PERF key gives access to the following pages :

Answer 11

• Take-off page
• Cruise page
• Approach page

Question 12

RNP and ANP can be found in the …

Answer 12

PROG second page

Question 13

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

Answer 13

Magnetic / True

Question 14

BCP …

Answer 14

Best Computed Position

Question 15

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

Answer 15

• Small - FMS computed data

- Large - manually entered data

Question 16

ETE …

Answer 16

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

Question 17

EFOB …

Answer 17

Estimated Fuel On Board

Question 18

Dead Reckoning uses information from …

Answer 18

dual ADC and dual AHRS

Question 19

Position computations modes are …

Answer 19

• BCP (Best Computed Position)

- GPS

Question 20

RNP …

Answer 20

Required Navigation Performance

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

Question 21

FTE …

Answer 21

Flight Technical Error

Question 22

FTE is …

Answer 22

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

Question 23

HDOP …

Answer 23

Horizontal Dilution Of Precision

Question 24

HDOP refers to …

Answer 24

The quality of the geometrical satellite constellation.

EPE = HDOP x measurement accuracy

Question 25

HDOP ratings ...

Answer 25

- 1 Ideal - 1-2 Excelent - 2-5 Good - 5-10 Moderate - 10-20 Fair - >20 Poor

Question 26

HIL means ... and represents ...

Answer 26

- 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

Question 27

HIL values in different flight areas: - ENROUTE ... - TERMINAL ... - APPROACH ...

Answer 27

- 2 NM - 1 NM - 0.3 NM

Question 28

RAIM ...

Answer 28

Receiver Autonomous Integrity Monitor

Question 29

FDE means ... and does ....

Answer 29

- 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.

Question 30

Best Computes Position (BCP) represents ...

Answer 30

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

Question 31

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

Answer 31

- GPS + VOR + DME | - Only GPS

Question 32

PRAIM ...

Answer 32

Predictive Receiver Autonomous Integrity Monitor

Question 33

Speed management | Speed has ... colors, they are ..., and each represents ...

Answer 33

- 2 - Magenta, Blue - Auto and Manual

Question 34

The parameters used to compute speed are ...

Answer 34

- 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.)

Question 35

FF Factor means ... and is usually set at ...

Answer 35

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

Question 36

FMS model ...

Answer 36

FMS 220 THALES

Question 37

Coordinate DMH ...

Answer 37

Degree Minute and Hundredths of minute

Question 38

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

Answer 38

60 seconds

Question 39

To access the secondary FPLN ...

Answer 39

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

Question 40

RTA ...

Answer 40

Required Time of Arrival

Question 41

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

Answer 41

Below the Transition Level in approach

Question 42

ISA MSG appears when ...

Answer 42

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

Question 43

When compensation is applied ...

Answer 43

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

Question 44

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

Answer 44

- APPROACH page | - ACT

Question 45

APP Speed can be selected before ... NM from the ... | After this point, the speed ...

Answer 45

- 2 NM, FAF | - Automatically

Question 46

When a GA is initiated the ...

Answer 46

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

Question 47

FMS 220, operational domain ...

Answer 47

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

Question 48

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

Answer 48

0.3 NM

Question 49

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

Answer 49

5 minutes