Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

UKCAA M11 CAT A1 > M11.5 > Flashcards

M11.5 Flashcards

1
Q

ISA standard pressure

A

14.7 psi
29.92 inches of mercury
1013.25 hPa at 15C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is a bellows

A

3 aneroid capsules forming a bellows

As the pressure increases the size of the bellows increase and decrease when the pressures decrease

Corrugated surface area
Analogue instruments

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is a bourdon tube

A

Like a party poper
Pressure changes enters the tube and it changes shape

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Pressure transducer

A

Takes pressure and converts to electronic

Analogue to digital

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does LVDT Stand for

A

Linear variable detector transformer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does the pitot system measure

A

Dynamic presser

Face into are flow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are static ports connected to

A

Altimeter
ASI
VSI

ASI connected to both

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the ASI attached to

A

Both pitot and static

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Where are static ports located

A

Located in smooth airflow around the fuselage

On the side of the aircraft of ether side below cockpit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why is there more the one static port

A

Cross ported

There can be cross winds so they take the average to reduce the error. This is done by the air data computer which accounts source error. 3 adc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are baffles for in a pitot tube

A

Prevents water and foreign objects entering pitot pressure line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Where is the drain on the pitot static system located

A

At the lowest point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What must all IFR aircraft have

A

Static source selector valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the following q codes:
QNH
QFE
QNE

A

QNH - Hight above sea level

QFE - hight above air field

QNE - ISA stander pressure, used after transition point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the different types of altitude indication

A

Barometric altimeter

Radio altimeter - only bellow 2500ft

GNSS or GPS

Laser altimeter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

When is an encoding altimeter used

A

Used when you want to send a bindery code to a transponder, e.g. squawk code

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How many antennas does a radio altimeter have

A

Two

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Sorvo assisted altimeter

A

LVDT

Sorvo assisted altimeter uses an EI bar to convert mechanical to electrical

Analogue to digital

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is used to send binary digits

A

ARINC 429

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what is the temperature decrease per 1000ft

A

2 degrees

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What do the IRU (inertial reference unit) and ADC (air data computer) combine to make

A

ADIRU

air data inertial reference unit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Air speed limits

A

Vso = stall speed in landing config

Vs1 = stall speed in normal config

Vfe = flaps maximum extension

Vno = normal cruse speed

Vne = never exceed

Mmo = mach limit

Vmo = structural limit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What uses a vertical gyro

A

EADI/ PFD

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What uses a directional (horizontal) gyro

A

ND
EHSI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
What uses a rate gyro
Rate of turn indicator
26
Earth tide gyro
Stays relative to earth 15 degrees per hour to keep tied to earth
27
What three thing gives a gyro it’s stability
Mass and it’s distribution Rotational speed Distance between axis and centre of mass
28
What does air power power a gyro
Works under suction Not used on high flying aircraft
29
What is the rpm of an electrical gyro
AC used as primary instruments 20000 to 24000 rpm DC is much slower used on standby instruments
30
How are gyros classified
Degrees of freedom Spin axis orientation By there use
31
What is the gyro frame on a modern aircraft (laser gyro)
ADIRU box
32
How many gyros does a ADIRU have
3 gyros 90 degrees apart
33
What is a laser gyro and what is a dither Motor
Rate gyro Piezo electric dither motor keeps the laser awake
34
How long does it take to run down a gyro
20 mins
35
What north does the IRS use
True north
36
What is the acronym CDMVT
compass deviation magnetic variance is true
37
What north are all runways based on
Magnetic north
38
Hard iron soft iron
Hard iron becomes permanently magnetic Soft iron is an induced magnet
39
How do you demagnetise an aircraft
De gouse
40
What is the problem is an aircraft is magnetised and what does compass fluid prevent
It will cause compass devastation compass fluid prevents oscillation
41
What is right the to a compass
Divation card
42
What is alpha max
The maximum AOA. If exceeded the aircraft will stall. Gets data from alpha vane
43
What is alpha vane
AOA censer
44
What are the advantages of electronic displays
Quantitive and qualitative They can be dimmed manually or automatic Easer to maintain Can be personalised
45
What does EFIS stand for
Electronic flight instrument system
46
EICAS
Boeing Engine/ electronic indication and crew alerting system
47
ECAM
electronic centralised aircraft monitoring
48
MCDU
Multi purpose control display unit
49
What does auto flight eliminate
Longer response times Impaired judgment Human error
50
What is the FDS
Flight director system Guidance overlay to show required trajectory Also shows when AP is engaged Used inconjnction with ILS
51
What is a CAT III C
Allows lading with zero visibility
52
When does auto trim operate
At all phases of flight
53
Yaw damper
Improves dynamic stability and prevents Dutch roll. Operating on all phases of flight
54
Flight envelope protection
Prevents abnormal flight conditions Stops extreme inputs
55
FADEC
Full aurthorite digital engine control
56
What does L and V-nav control
L-NAV = roll axis V-NAV = pitch axis
57
What system is used in an auto pilot
Closed loop system as feedback if provided.
58
What are the two types of auto pilot
Duplex and triplex
59
What does TACO control
Controls the rate of change of a control surface
60
What does the inner and outer loop of an auto pilot system do
Inner Provides AP response, moves flight controls and provides feed back Outer loop sends signals to the inner to provide information on what needs to be done
61
What is auto- thrust and auto throttle
Auto thrust is fly by wire. Uses FADEC. Levers do not move Auto throttle. Mechanical link and throttle leavers move
62
What system must be auto land
Triplex system
63
When does the stall warning go off
5 KTS or 5% above stall speed
64
Frequency range of HF and VHF
HF 3 - 30MHz VHF 30 - 300 MHz
65
Air band frequency range
108MHz to 136.975MHz 118-136.975 coms 108-117.975 nav
66
What are the vhf channel spacing
8.33khz 2280 channels
67
Oscillator resonator
Oscillator to transmit Resonator to receive
68
Marker beacon system frequency
75 MHz
69
What’s is a sky wave
Hf wave
70
PA priorities
Priority 1 is a flight deck announcement Priority 2 announcement for PAX cabin Priority 3 pre recorded announcement Priority 4 boarding music
71
Selcal
Selective call system
72
What is the flight interphone system
Used for flight crew to communicate between each other
73
What is the cabin interphone
For flight deck and cabin crew to communicate Bing bong sound on flight deck of cabin
74
What is the service inter phone
Intercom between crew and ground maintenance Fight crew to ground Isolated by weight do wheels switches to prevent interference
75
What is the ground crew call system
Crew to alert ground crew
76
What is sat com
HF improvement It is the basis of FANS (future air nav system)
77
ACARS frequency
SITA 131.725MHz ARINC 131.550MHz Europe 136.925
78
FDR
Flight data recorder Under water locator bacon 37.5KHz for 90 days At back of aircraft Solid state drives Sores last 25 hours of flight data 3400 g impact resistance, 1000c fire resistance 250 different inputs Starts automatic recording
79
CVR
4 Chanel recording
80
ELT
Emergency locator transmitter 406.025 MHz 243 MHz 121.500 MHz Fixed Fixed portable Portable
81
Theta Rho
Theta is bearing Rho distance
82
ADF
Automatic direction finding Uses relative bearing from aircraft nose to ground based 190khz to 1750khz Shown on rmi (radio magnetic indicator) or EHSI Bearing taken in clockwise direction Used for en-route nav, position fixing and position holding
83
ADF components
Combined sense and loop antenna ADF receiver ADF display ADF control unit
84
What can ADF be paired with to get distance and what happens if out of range
DME And if signal is lost there is a null position on indicator
85
VOR
Very high frequency omnidirectional range En route nav Bearings to (towards) and from (away) Two 30hz wave modulated to vhf carrier 50nm range
86
What is TVOR
Located at airport terminal 25nm range

UKCAA M11 CAT A1 (21 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions