M11.5.1 Flashcards

1
Q

What is ISA pressure at 15°C?

A

1013.25 Hectopascals

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2
Q

As altitude increases by 30 feet what happens to pressure?

A

For every 30 feet, pressure decreases by one Hectopascal

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3
Q

What does QFE stand for?

A

Pressure at field elevation

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4
Q

What does QNH stand for?

A

Pressure at sea level

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5
Q

Total pressure equals what?

A

Static pressure plus dynamic pressure

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6
Q

What is VSO?

A

Stall speed with flats and gears down (Landing configuration)

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7
Q

What is VFE?

A

Max allowable speed with flaps extended

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8
Q

What is VSI?

A

Stall speed in clean configuration with max weight

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9
Q

What is VNO?

A

Maximum air speed for cruise flight

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10
Q

What is VNE?

A

Speed never exceed

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11
Q

What colour band is the normal operating range?

A

Green

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12
Q

What colour band is full flap operating range?

A

White

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13
Q

What is the caution range and what colour band is it represented by?

A

It is the range that can be reached only at smooth air and without hard manoeuvers and is represented by a yellow band

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14
Q

What is VMO?

A

Max operating velocity

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15
Q

What is MMO?

A

Maximum allowed Mach number

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16
Q

What type of pressure does the vertical speed indicator use?

A

Static pressure

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17
Q

What does TAT stand for?

A

Static air temperature

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18
Q

What does OAT stand for?

A

Undisturbed air temperature/outside air temperature

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19
Q

What material are the tubes made of for the Pitot static system and why?

A

Aluminium because it is lightweight

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20
Q

What are the four things that can cause static source error?

A

Fuselage shape, airspeed, angle of attack, and flap and gear positions

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21
Q

What prevents rain and dust getting into the Pitot static probe?

A

Baffles

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22
Q

What can the Pitot probe also be known as?

A

The prandtl tube

23
Q

What are 3 ADUs called?

A

An ADRIU (air data inertial reference unit)

24
Q

What happens if the pilot deviates more than 300ft? And what happens if landing gear is selected?

A

There is a chime in the headset and a visual warning, if landing gear is selected it will switch off automatically

25
Q

What happens if the pilot deviates beyond 900ft?

A

The system will automatically switch off because the system assumes that the pilot is changing flight level

26
Q

When does an over speed warning occur?

A

When airspeed is higher than VMO or MMO

27
Q

What is a stall warning?

A

It is a visual, audio warning and can be accompanied by a stick shaker

28
Q

What can the flight data recorder withstand?

A

1000g and 1000°C

29
Q

How can beacons be activated?

A

Seawater at 40kHz (lasts 30days and can withstand more than 3000m) and motion

30
Q

How much data does the FDR store?

A

25hrs worth of data and then overrides itself

31
Q

Gyro stability depends on 3 factors, what are they?

A

Mass, rotational speed and distance between the axis and the centre of mass

32
Q

What is gyro procession?

A

It is when a force is applied and the reaction is shifted by 90°

33
Q

What is apparent topple?

A

15° per hr at the equator and 0° at the pole

34
Q

What is a lubber line?

A

It is the line used to calculate what a heading is at

35
Q

What is one degree of freedom on a gyro?

A

The gyro can only spin around it’s axis

36
Q

What is two degrees of freedom on a gyro?

A

One gimbal

37
Q

What is total drift?

A

Apparent drift plus real drift

38
Q

What is total topple?

A

Apparent topple plus real topple

39
Q

How do gyros start?

A

Started by a vacuum or suction pump

40
Q

What does the suction regulator control?

A

Keeps suction at about 5 inches of mercury to prevent over speed

41
Q

How many degrees of freedom does a directional gyro have?

A

3

42
Q

What is a standard turn?

A

The rate of turn should be 2 mins for a complete turn

43
Q

How long does it take for a gyro to stop spinning after power off?

A

20mins

44
Q

What is true north?

A

Reference to geographic North Pole (true heading)

45
Q

What is magnetic north?

A

Heading with reference to magnetic North Pole

46
Q

What is variation?

A

The difference between true north and magnetic north

47
Q

What is deviation?

A

The difference between magnetic north and true north

48
Q

What does EFIS stand for?

A

Electronic flight instrument system

49
Q

What does ECAM stand for?

A

Electronic centralised aircraft monitoring

50
Q

What does EICAS stand for?

A

Engine indication and crew alerting system

51
Q

With local warnings what does each colour mean (red, amber, white)?

A

Red - immediate action
Amber - action required
White - switched off

52
Q

What are the three alert levels?

A

Warnings, cautions and advisories

53
Q

What are the two types of vibration sensor that are used?

A

Electromagnetic accelerometer and the piezoelectric crystal acceleration