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B2 MODULE 5 > Subsection 15a Typical electronic/digital aircraft systems > Flashcards

Subsection 15a Typical electronic/digital aircraft systems Flashcards

1
Q

A basic IRS platform has?

A

3 accelerometer’s and 3 laser gyro’s

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2
Q

A BITE check for automatic performance and fault monitoring is carried out when?

A

Power up self test

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3
Q

A bulk erase facility in a CVR is interlocked to prevent?

A

Inadvertent erasure in flight

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4
Q

A central fault display system should be available through an easy accessible?

A

Multifunction control display unit

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5
Q

A central maintenance computer provides ground and flight monitoring and testing on?

A

An on board computer

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6
Q

A centralised monitoring computer system is used to test systems in flight and on the ground using?

A

A centralised on board control unit

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7
Q

A fault light appears on the IRS mode selector unit during the alignment sequence. The correct action is?

A

Select HDG/STS on the ISDU, observe the action code in the right alpha/numeric display

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8
Q

A FDR can obtain information from aircraft instruments provides?

A

There is adequate isolation

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9
Q

A flight data recorder should be capable of recording the last?

A

25 hrs of operation

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10
Q

An FMS has a total of how many databases?

A

2

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11
Q

A full operation system bite check will carry out an internal system test that ensures the system meets design requirements and is operational as well as checking the full system but will not?

A

Move the controls to their stops

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12
Q

A level B alert message in EICAS requires?

A

Timely action

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13
Q

A method used in modern aircraft for reporting in flight faults to an engineering and monitoring ground station is?

A

ACARS

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14
Q

A modern electromagnetic FDR for recording data could use?

A

A plastic tape coated in ferrite

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15
Q

A single failure of a fly by wire control surface computer will?

A

Not have any operational effect on the system

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16
Q

A single failure of a fly by wire system has?

A

No effect on aircraft operation

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17
Q

A strap down INS has a?

A

Solid state accelerometer system

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18
Q

ACARS is an acronym for?

A

Aircraft Communicating, Addressing and Reporting system

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19
Q

An ACARS system operates in the frequency range?

A

131.550 Mhz

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20
Q

ACARS is used to?

A

Download aircraft status reports

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21
Q

An EICAS message of level D provides?

A

Only message

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22
Q

An FDR fitted to a helicopter begins recording?

A

On engine start up

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23
Q

An FMS navigation database is updated?

A

Every 28 days

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24
Q

An FMS system besides controlling navigation, thrust and auto-nav also provides?

A

Dedicated status and warnings

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25
Q

An IN system requires data from?

A

The air data computer

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26
Q

AN Inertial navigation system ( INS/IRS ) computes distance from acceleration by?

A

Two successive integrations

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27
Q

An INS/IRS battery unit provides standby power when?

A

Airbourne and on the ground

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28
Q

An IRS has accelerometers and gyro’s fixed?

A

To the Airframe

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29
Q

An IRS has?

A

3 accelerometers

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30
Q

An IRS is only certified for alignment upto?

A

+78.25 and -78.25

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31
Q

An IRS laser gyro provides?

A

Detection of the rate of movement about an aircraft axis

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32
Q

An IRS system requires data for wind computation from?

A

Central air data computer

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33
Q

An IRU interface test is carried out?

A

Only on the ground

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34
Q

As a minimum requirement when must a cockpit recorder start recording?

A

Once the aircraft is ready to move under its own power

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35
Q

As a minimum requirement when must a cockpit voice recorder start recording?

A

On first engine start

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36
Q

Before an IRS can complete the alignment sequence the current position?

A

Must be entered

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37
Q

Before the aircraft is moved from the loading pier the pilot must insert?

A

The the latitude and longitude of the pier into the IRS

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38
Q

BITE for ground use only is?

A

Switched off on take-off

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39
Q

BITE test carried out on input sensors and actuators performs?

A

A performance test of the system

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40
Q

BITE tests are inhibited for?

A

Ground use during take-off

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41
Q

Brake temperature displayed on EFIS has different colours for?

A

Different temperatures

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42
Q

Control surface feedback is fed back to the ?

A

Flight control computer only

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43
Q

Data to flight data recorder can be taken from a communal data bus if?

A

Source isolation has been considered

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44
Q

EICAS provides engine parameters and?

A

System warnings only

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45
Q

Fly by wire high speed protection is to prevent?

A

Tuck under

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46
Q

Fly by wire systems in the fully active mode, the actuators will ?

A

Both be active

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47
Q

Fly by wire load alleviation function in turbulent conditions will result in?

A

Aileron and spoilers moving symmetrically upwards

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48
Q

Fly by wire control is achieved by?

A

Spoilers and ailerons

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49
Q

FMS CDU warnings are?

A

MSG,FAIL and OFST

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50
Q

FMS failure and warnings are displayed on?

A

EICAS

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51
Q

FMS system gives warning indications for?

A

Any flight phase

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52
Q

For an IRS system to pass the alignment system performance test, the latitude entered must be within?

A

Given limits of the latitude computed by the IRU

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53
Q

Gyro compassing is the term used for?

A

Self alignment in azimuth

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54
Q

Heading reference required to establish initial heading during alignment sequence comes from?

A

Earths rotation

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55
Q

How does the symbol generator detect a program error?

A

By looking at the odd parity without error

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56
Q

How many satellite signals are required to achieve precise 3D positioning?

A

4

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57
Q

HSI heading is valid if the heading flag is?

A

Out of view

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58
Q

If a display shows a red cross only, it is due to a?

A

Symbol generator failure

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59
Q

If a fly by wire actuator loses hydraulic power to the control surface will remain in the failure position but may move due to ?

A

Aerodynamic pressure

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60
Q

If additional multi-purpose flight attandants panels ( FAP’s) need to be fitted in a cabin system they are?

A

Daisy chain connected to the existing FAP’s

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61
Q

If an EFIS has 3 symbol generators what is the purpose of the 3rd symbol generator?

A

Standby

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62
Q

If a cabin chime indications ( pax call etc ) are inhibited, the inhibit function is reset when the aircraft transits from?

A

Flight phase to landing inhibit phase

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63
Q

If colour distortion appears around the edges of an EFIS display?

A

The CRT has become magnetised

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64
Q

If on a flightdeck EFIS system all the displays were missing one BIT of information, this is most likely to be?

A

The input sensor bus an display controller

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65
Q

If one EICAS CRT fails the remaining CRT will display?

A

Primary EICAS data

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66
Q

If one FMS fails in a dual FMS system, when the aircraft is on the ground then both CDU’s will display?

A

The menu page without prompt

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67
Q

If part of a display is lost on a CRT this could be due to?

A

An inoperative symbol generator or input sensor

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68
Q

In a flight director how are small deviations corrected?

A

Pilot input

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69
Q

In a flight management system ( FMS ) data is input manually to the computing system through?

A

The control and display unit

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70
Q

In a fly by wire system, if the pilot control input is derived from a side stick controller there is?

A

No control surface feedback to the sidestick

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71
Q

In a fly by wire system, what is meant by normal control law?

A

Control surfaces are controlled from primary computers

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72
Q

In a GPS system, satellites transmission identifies the satellite using?

A

Pseudo random code

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73
Q

In a GPS system the number of satellites required to achieve a 3D fix is?

A

4

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74
Q

In a MCDU the flight deck effect is any EICAS display or discrete annunciator to inform the flight crew of ?

A

An in-flight fault

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75
Q

In a typical glass cockpit EICAS provides?

A

The following engine parameters and system warnings only

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76
Q

In a typical EFIS system, 3 symbol generators are used to supply the?

A

Four displays with the correct signals

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77
Q

In an aircraft equiped with TCAS II and EFIS, RA pitch command is shown on?

A

The EADI and TA/RA traffic on the EHSI

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78
Q

In an EFIS display the lines, scales, indicator and synoptic are generated by?

A

Stroke pulse

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79
Q

In an EICAS level C messages are advisories and displayed in?

A

Amber or light blue

80
Q

In an IFE system the supply of network data, interactive data. passenger service data and database information is provided to each seat from the area distribution box via?

A

Fibre optic or ethernet cable

81
Q

In an IN system, the purpose of the stable platform is to ?

A

Prevent unwanted acceleration affecting the accelerometers

82
Q

In EICAS electronic displays the system consists of two CRT displays, during normal flight the lower CRT is blank and the upper CRT displays?

A

Primary engine parameters

83
Q

In modern aircraft the output from the clock is used to give GMT details to the?

A

Flight recorder and other systems

84
Q

In the EICAS system when is the maintenance mode available?

A

Only available on the ground

85
Q

In the passenger address system an announcement being made on the handset would be interupted if another announcement was initiated on?

A

The cockpit handset

86
Q

In which of the following does TCAS II advise the pilot to make a maneouvre?

A

RA

87
Q

Integrated pre-recorded announcement and music ( I-PRAM ) is stored on a compact flash card on the?

A

Flight attendant panels

88
Q

Interactivity between cabin crew and the CID’s directors is provided by the?

A

Flight attendants panels ( FAP’s ) and mini-FAP’s

89
Q

IRS accelerometers are mounted?

A

90 degrees to each other

90
Q

IRS alignment takes up to 10 minutes and the present position can be entered at?

A

Any time during alignment

91
Q

IRS laser ring gyro’s provide?

A

Rate of movement about an axis

92
Q

Loudspeaker level adjustment for announcement and chimes from the cabin intercommunication data system ( CIDS ) can be adjusted?

A

Either on the ground or in flight

93
Q

Marker beacon receivers have no control unit typically turns on?

A

When the avionics master switch is activated

94
Q

MFD is the abbreviation for?

A

Multi Function Display

95
Q

Modern aircraft with electronic displays would display information on the airframe and engine on which system?

A

ECAM

96
Q

Most video used on IFE AVOD systems use which compression/encoding standard?

A

MPEG

97
Q

Much of the cabin layout definition and other airline specific data such as cabin zoning, chime sequences and default audio levels are stored on?

A

The plugin cabin assignment module incorperated on the flight attendant panels

98
Q

On a fly by wire system, what controls the stab trim?

A

ELAC and SEC

99
Q

On a modern aircraft cabin system equiped with a CID’s the CID’s interfaces with the aircon system via the?

A

ADCN

100
Q

On a modern aircraft when are BITE checks carried out?

A

Continuously when the system is in use

101
Q

On what displays would attitude data be depicted?

A

PFD

102
Q

Output from the cockpit acoustic devices are never interrupted by?

A

Other audio sources

103
Q

PAX laptops are connected to the seat display units via?

A

RJ45 plug

104
Q

Pitch control of a fly by wire system is achieved by ?

A

Stabilizer and elevator

105
Q

Relationship of CMC’s to BITE systems is best described as?

A

CMC’s monitors the individual BITE systems and presents data

106
Q

SID’s data stored in the FMC performance database is?

A

Standard instrument departures

107
Q

TCAS general arrangements consist of?

A

TCAS computer unit, antennas and cockpit presentation

108
Q

Testing of a CADC can be carried out?

A

On the ground only

109
Q

The sterile cockpit switch, when activated indicates on the FAP’s and other cabin indicators that the flight crew do not wish to recieve communications other than matters concerning?

A

Safety critical events

110
Q

The accelerometer output in an INS/IRS is integrated?

A

Twice to give distance

111
Q

The accepted error from INS/IRS is?

A

3 miles/hour plus 3 miles

112
Q

The aircraft clocks send signals to aircraft systems to?

A

Display and record GMT

113
Q

The basic principle of radar is based upon the time delay between?

A

Outward and returning pulse

114
Q

The BITE indicator on a DFDR shows yellow colour, this indicates?

A

Power is off or DFDR is at fault

115
Q

The cabin and flight crew interphone system allows the communication via telephone between?

A

All attendant stations and between the attendant stations and the cockpit

116
Q

The central processing function of the cabin intercommunications data system is contained?

A

Within the directors

117
Q

The CMS uses?

A

The maintenance mode of operation

118
Q

The command bars on an ADI relate to?

A

The path required

119
Q

The common remote data concentrators collect, convert and exchange data between?

A

The ADCN and LRU’s that do not have AFDX technology

120
Q

The compact mode in an EICAS is used to show maintenance pages when?

A

One display is inactive

121
Q

The control of the speed or rate that the flight director command bars move can be controlled by?

A

Rate or velocity feedback

122
Q

The difference between the right ADC and the left ADC is?

A

Encoded in the SDI field

123
Q

The flight data recorder starts recording ?

A

After first engine start

124
Q

The FMCS is updated periodically during flight by?

A

The pilot

125
Q

The FMS can reset the error that builds up in the IRS by using?

A

VOR,DME,GPS,LOC

126
Q

The FMS can update the IRS position outputs by using information from either?

A

GPS, DME, LOC and VOR

127
Q

The FMS carries out a RHO/THETA navigation function, the purpose of this is to update the IRS system with?

A

An accurate position fix of latitude and longitude

128
Q

The FMS databases consist of?

A

One performance and two navigation databases

129
Q

The FMS is updated by an aircraft engineer updating the system either by?

A

A magnetic tape or floppy disc

130
Q

The FMS operational database is fed with information on aircraft?

A

eight, cruise altitude and cost index before take off

131
Q

The four display modes used by the ECAM system are?

A

Flight phase, advisory, failure related and manual

132
Q

The frequency of a glideslope transmitter is?

A

328.6 to 335.4 Mhz

133
Q

The functions of the cabin intercommunications data system are programmed, configured and controlled via?

A

The FAP’s

134
Q

The general arrangement of GPS consists of 3 segments, the segments of a GPS system are?

A

User segment, control segment and space segment

135
Q

The glideslope in an ILS provides?

A

Vertical references

136
Q

The inputs and outputs of a CADC are?

A

Pitot/static in, altitude, CAS, mach and VS out

137
Q

The landscape camera system can be deactivated remotely from the camera module from a?

A

Switch located on the exterior of the aircraft

138
Q

The LH and RH cockpit displays will only be supplied from the same symbol generator when?

A

All other symbol generators have failed

139
Q

The method of producing white lines for aircraft symbols, V/S scale etc on a EADI is by?

A

Stroke pulse

140
Q

The minimum requirement for a cockpit voice recorder to begin operating is on?

A

Engine start up

141
Q

The minimum requirement for an aeroplane CVR is from?

A

Engine start

142
Q

The minimum requiremnt for an aeroplane CVR is prior to?

A

Beginning of the take-off roll

143
Q

The minimum standards for aircraft instrumentation is set by?

A

ICAO

144
Q

The movement of fly-by-wire control surfaces are?

A

Electrically controlled and hydraulically actuated

145
Q

The Navigation database program of a flight management system would be held in?

A

ROM

146
Q

The number of modes of operation in GPWS is?

A

Seven

147
Q

The onboard information system ( OIS ) is hosted by?

A

The network server system

148
Q

The operational database of the FMS may have to be modified in flight?

A

It cannot be modified in flight

149
Q

The output of an INS can be fed to the?

A

Attitude indicators

150
Q

The passenger address system distributes announcements from the cockpit and each attendant station through?

A

All assigned passenger speakers

151
Q

The polled mode in an ACARS operates only when interrogated by?

A

The ground facility

152
Q

The purpose of an Input/output module ( IOM ) is to convert the aircraft system data sent and received by LRU’s directly connected to them from?

A

Non AFDX into AFDX format and vica versa

153
Q

The recording medium in an FDR is?

A

Magnetic tape coated with ferrite

154
Q

The rising runway is positioned from information derived from?

A

The radio altimeter

155
Q

The self test function on an EFIS system can be tested?

A

In air and ground

156
Q

The service interphone system allows the communication via telephone between the ground crew, and cabin crew when?

A

The aircraft is on the ground

157
Q

The third EFIS symbol generator is operated as standby to?

A

The #1 and #2 systems

158
Q

The 3 accelerometers on a strapdown system are mounted?

A

90 degrees to each other

159
Q

The various CPIOM’s used in an integrated modular avionics system differ in respect to their?

A

Input/output cards only

160
Q

Typical displays on an EHSI are?

A

VOR, Heading and track

161
Q

Typical IRS inputs and data bus transfer to the FMS are?

A

Vertical accelleration, true heading and roll angle over low speed ARINC 429

162
Q

Using INS and aircraft flies?

A

Great circle route

163
Q

Variations in light on EFIS displays are compensated for by an external light dependant resistor mounted in the flight deck compensating for all displays in a ?

A

Parallel to parallel format

164
Q

Various indicating functions for the cabin systems are achieved via?

A

The FAP’s within the cabin

165
Q

Weather radar information can be displayed on the EHSI in?

A

Map mode

166
Q

What are the outputs from digital clocks used for ?

A

flight data acquisition unit, flight management computer and voice recorder

167
Q

What are the outputs of a digital ADC?

A

TAS, MACH, ALTITUDE, TAT and SAT

168
Q

What are the shapes of traffic shown on a TCAS display?

A

White diamonds, red squares and amber circles

169
Q

What displays would normally indicate engine instrumentation?

A

EICAS

170
Q

What does the CADC feed?

A

Cabin pressure controller, machmeter and altimeter

171
Q

What is the highest priority on an ECAM display?

A

Failure

172
Q

What information is required before completion of the alignment of INS?

A

Aircraft present position

173
Q

What information would normally be displayed on an EICAS system?

A

Engine instruments

174
Q

What is normally displayed on a PFD?

A

Attitude data

175
Q

What is primary mode of navigation on a modern aeroplane?

A

Only IRS

176
Q

What is the approximate earth rate?

A

15 degrees per hour

177
Q

What is the minimum requirement for a CVR to start recording?

A

When the aircraft is capable of moving under its own power

178
Q

What is the minimum requirement for a CVR to operate?

A

Before take off

179
Q

What must be entered into the IRS before the aircraft can be moved?

A

Present position

180
Q

What warnings can an FMS provide?

A

Discrete warnings

181
Q

When does a BITE test record intermittent faults?

A

Latch immediately

182
Q

When does the flight data recorder start recording?

A

On first engine start

183
Q

When more than one directors is fitted to fulfill the role of controllers within a cabin intercommunications data system ( CID’s ) one of the directors in active and the other in?

A

Standby

184
Q

When performing a test on electronic displays using BITE signal generator injects a test signal into the display and the word?

A

Test appears on the screen

185
Q

When testing a diode with a test set, what voltage drop would be typical?

A

0.3 to 0.7 volts

186
Q

When testing an EGT probe it must be?

A

Soaked and ambient temperature allowance taken into consideration

187
Q

Where are the digital flight data recorder outputs supplied to?

A

There are no outputs

188
Q

Where can the ECAM be displayed on a modern airliner?

A

On any of the displays

189
Q

Where can the EFIS be displayed in a modern airliner?

A

On any of the displays

190
Q

Where do the inputs from a DADC go?

A

EADI

191
Q

Which BITE test is used for automatic passive monitoring and detection of LRU failures?

A

Continuous testing

192
Q

Which device in an EICAS system performs the symbols generator function?

A

EICAS computer

193
Q

Which major component of an ECAM system manages system operation and interfaces input signals from sensors to display units?

A

Flight warning computer ( FWC )

194
Q

Which systems does a modern ADC give information to?

A

Flight control computer, air data instruments and engine systems

195
Q

Wi-fi provision to passengers is provided via satellite link while?

A

Not over land

196
Q

With EICAS an engine overheat will activate a?

A

level B caution

197
Q

XTC ( crosstrack ) is the perpendicular distance from?

A

The desired track

B2 MODULE 5 (17 decks)

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