Mod 5 Flashcards
1
Q
What does EICAS mean?
A
Engine indicating and Crew alerting system.
2
Q
What does ECAM mean?
A
Electronic Centralised Aircraft Monitoring System
3
Q
Convert 011101 Base2 to octal
A
35
4
Q
What are the basic elements for ‘Classic T’ format?
A
Airspeed, attitude,
altitude and direction.
5
Q
Typical displays on an EHSI are
A
VOR, Map, Plan and weather radar
6
Q
Engine parameters are displayed on
A
ECAM
7
Q
What is the fixed feature of an ADI?
A
The aircraft symbol
8
Q
What functions are available on the EHSI?
A
Full arc, Wx and Map Mode
9
Q
EFIS systems have two control panels, their purpose is
A
one to control the type of EFIS display and the other
to select the source of the information being displayed.
10
Q
What would you expect to see displayed on an EADI display?
A
Flight director command bars, slip
indicator, rate to altitude & autoland.
11
Q
On an EFIS system the weather radar is displayed on
A
EHSI.
12
Q
EADI displays show
A
pitch and roll attitudes.
13
Q
On an EHSI in weather radar mode, a severe storm would be shown as
A
red areas with black surrounds.
14
Q
During flight (non fault conditions) the
EICAS system displays on the lower CRT
A
secondary engine parameters.
15
Q
the EFIS system consists of
A
EADI, EHSI, Symbol generators
16
Q
A weather radar image can be displayed on the ND
on all modes except
A
plan
17
Q
A modern Electronic Horizontal Situation
Indicator will display the following:
A
Waypoints, ILS Steering Information,
Distance to go and Magnetic Heading.
18
Q
On a modern ‘glass cockpit’ aircraft, engine
information will be displayed on
A
ECAM
19
Q
What does EFIS mean?
A
Electronic Flight Instrument System.
20
Q
What does EICAS mean?
A
Engine indicating and Crew alerting system
21
Q
What does ECAM mean?
A
Electronic Centralised Aircraft Monitoring System
22
Q
Convert 011101 Base2 to octal
A
35
23
Q
The binary number 1001 expressed as a decimal is
A
9
24
Q
Convert decimal 15 into hexadecimal.
A
F
25
A hexadecimal is a number to base.
16
26
The binary coded decimal number 10011000
expressed as a decimal number is.
98
27
The decimal number 7 expressed as a binary number is
111
28
Binary coded decimal (BCD) format has a minimum of.
4
29
What is the binary notation for 29?
0010 1001
30
What is the binary notation for 35?
0011 0101.
31
If a signal has quantity in volts and physical position it is
analogue.
32
Physical variables in quantitative forms, such as voltage
or angular rotation of a shaft are.
analogue.
33
A given transducer provides a voltage which
corresponds to true heading. This voltage can be
converted to 'bits' by using a.
analogue to digital converter.
34
An A to D converter uses successive approximation to
increase speed.
35
The function of a commutator is to
provide a sampling in sequence of a number of parameters.
36
An encoder
changes analogue to digital.
37
An analogue to digital converter is as accurate as
the sampling rate.
38
What does 1 represent in an analogue system?
Switches closed, magnetised
39
Analogue logic 1 is
losed circuit, Logic Q=1
40
Digital signals can be represented
by a series of integers.
41
in arinc 629, LRUs are programmed to transmit
one transmits and one recieves
42
In aircraft use, fibre optic cables should comply with.
ARINC 636 standard.
43
ARINC 629 databus is
two cables, bidirectional
44
An ARINC 573 data bus is used
to input into a Digital Flight Data Recorder.
45
An ARINC 429 bus uses
a twisted shielded pair of wires
46
The ARINC 429 data bus word systems use.
binary coded decimal.
47
ARINC 573 is related to what system?
FDR
48
ARINC 629 current mode couplers are
inductive
49
ARINC 629 databus is
one bus, bi-directional data flow
50
How is data coupled to an ARINC 629 data bus?
By an inductive pickup
51
The parity bit in digital information is used
to check the validity of data information
52
ARINC 429 SDI word format is at bits
9-10
53
What is the parity bit for on an ARINC 429 bus?
To check for corruption during transmission of a word.
54
An ARINC 429 word label format is
octal.
55
How many LRUs can be connected to an ARINC 429 data bus?
20
56
An ARINC 429 system uses a.
a twisted shielded pair of wires
57
What system uses base 8?
ARINC 429, in data word labels only.
58
An ARINC 629 bus cable is a twisted pair of wires with
a 130-ohm resistor at both ends.
59
One of the ARINC 429 formats is.
BCD
60
The output voltage of ARINC 429 signal is
+10v to -10v. H73.
61
A NOR gate with both inputs inverted becomes a
AND gate
62
Which logic gate can be represented as a
parallel circuit?
OR gate.
63
Making an inverter from a NAND or NOR gate is achieved by
connecting the inputs.
64
An AND gate output is 1 when inputs are
both 1
65
What sort of gate requires two positive
voltages to operate?
AND
66
When will a NAND gate give logic 0 at
the output?
When both inputs are at 1.
67
An AND gate with inverted inputs and an
inverted output is equivalent to
an OR gate
68
Logic gates internal operating
mechanisms are produced from.
transistors.
69
This truth table is for a
AND gate
70
A NAND and NOR to become a NOT gate have
inputs connected together
71
A BYTE is usually
an 8 bit word.
72
What is EPROM?
Erasable programmable read only memory.
73
How many bytes can be carried in a 32bit word?
4 bytes
74
**A computer consist of at least the C.P.U and
memory and input & output port.
75
A basic computer would consist of.
memory, input/output ports and CPU.
76
An EPROM
is erased after reading
77
A computer requires to operate,
data bus, a control bus, a address bus
78
Fibre optic cables
are immune to EMI
79
What kind of light is used in a fibre optic systems?
Infrared
80
Light travels along a fibre optic by
reflection
81
A fibreoptic light source is normally.
a laser or LED
82
The fibreoptic cable can be identified on aircraft by its jacket
colour which is.
purple
83
What maintenance problems are associated with
fibreoptics?
Kinking and
contamination of connectors.
84
A fibreoptic data bus
can transmit several messages simultaneously
85
Fibreoptic systems can transmit data in
both directions at the same time
86
The inside of a CRT consists of
phosphor coating and rare
mercury gas.
87
Primary colours of a CRT are.
red, green and blue
88
The timebase in a CRT consists of
an amplifier and an oscillator
89
LCD screens are driven by
AC
90
The supply to an LCD is
AC
91
A seven-segment display is used to.
display octal and decimal numbers only.
92
ESDS bags are sealed by
twine (100% cotton)
93
What precautions are required when removing ESDS
equipment?
Wear a wrist strap connected to
an approved ground point
94
A flight deck CRT LRU is being replaced. What
does the ESDS label indicate?
Do not touch plug pins or leave
them exposed.
95
During an EFIS screen fit.
dont touch terminals
96
Before fitting a Printed Circuit Board you should check the
resistance between skin and strap end plug is more than 1
megohms.
97
The resistance of the wrist strap used as part
of anti static precautions should be.
250 kilohm - 1.5
megohm.
98
When handling PCB's labelled
ESDS, what precaution are taken?
Isolate electrical power before installing on
99
After attaching a wrist strap to your wrist (which is connected
to aircraft ground), prior to removal of ESDS equipment, the
resistance measured
between the strap and
the pin ground must be >1 Megohms.
100
Electrostatic discharge occurs when.
materials of different potential are
brought in close proximity to each other.
101
When removing a PC card from an ESDS
assembly ensure a low current path between.
you and the aircraft.
102
An aircraft system that, should it fail due to a
software error, would cause a significant
reduction in safety margins may also cause.
injuries to some occupants.
103
An aircraft system allocated a Criticality
Category of Hazardous has a Software Level of
B
104
If due to a software error in an aircraft system that
would cause injuries to some of the occupants, the
system has a software criticality category of
major effect.
105
Software can be modified by
using the same rules as apply as to
modifications to hardware.
106
Who is responsible for producing the operational
program of the FMS?
The manufacturer
107
Control of software is carried out by
the National Aviation
Authority.
108
What is the definition of level one
software?
Critical
109
Who can sign for a software update?
Engineer.
110
What is the effect of a level 1 software failure?
Loss of aircraft and / or fatalities.
111
Software changes come under the responsibility of
the aircraft constructor
112
Level 1 software failure.
is defined as critical and can lead to loss of aircraft
113
In order to maintain HIRF protection, bonding checks between
airframe and electrical components carrying voltages greater than
50 volts RMS or DC or main earth return should not exceed
1 ohm.
114
To shield a fibre optic from EMI you must
use an opto-isolator
115
Manufactures of aircraft can ensure HIRF protection by
Designing specific avionic areas that are shielded against HIRF
116
Which of the following could be a primary cause
of HIRF protection failure?
Unserviceable radio filters
117
HIRF protection of LRUs is provided by
built in filters and overvoltage circuits
118
Electromagnetic compatibility is achieved by
shielding, screening, earthing, bonding and interference filters.
119
HIRF is acronym for
High Intensity Radiated Field.
120
An FMS system, besides controlling navigation, thrust and auto-nav, also provides.
dedicated status and warnings.
121
MFD is the abbreviation for
Multi function display.
122
EADI sky and ground display is provided by.
raster scan.
123
HSI heading is valid if the heading flag is
out of view.
124
GPS navigation uses a constellation of satellites that is made up of.
21 active and 3 spare
125
Space Segment
24 Satellites in 6 Orbits (4 Satellites in each orbit)
21 Satellites are Active (3 held as spares)
All Satellites are evenly spaced around the earth
Producing a minimum of four (4) satellites in view from any
location on the earth at anytime
Each orbits the Earth every 12 hours at an altitude of
approximately 11,000 NM = 20,372Km
126
The command bars on an ADI relate to.
path required
127
An FMS databank memory is updated
every 28 days
128
In a Flight Management System (FMS), data is input manually to the computing system through the
Control and Display Unit
129
In a Global Positioning System (GPS), the number of satellites required to achieve a 3 dimensional fix is.
4
130
FMS failure and warnings are.
EICAS
131
IRS accelerometers are mounted
90° to each other
132
The third EFIS Symbol Generator is operated
as a standby to the No1 and No2 system
133
What must be entered into the IRS
before the aircraft can be moved?
Present position
134
A method used in modern aircraft for reporting in flight faults to an engineering and monitoring ground station is.
ACARS
135
The self test function on an EFIS system can be tested
in the air and on the ground
136
The Centralized Aircraft Monitoring System uses the maintenance mode of operation
on the ground only
137
In which of the following does TCAS II advise the pilot to make a maneouvre?
RA
138
ACARS is an acronym for
Aircraft Communicating Addressing and Reporting System.
139
When does the flight data recorder start recording ?
When the first engine starts
140
ECAM system was adopted for
Airbus
141
