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Virgin Australia > Tech > Flashcards

Tech Flashcards

1
Q

What is MCRIT?

A

The point at which a localised airflow goes supersonic

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2
Q

What are winglets and what do they do?

A

Increase the aspect ratio, reduce induced drag, smaller gates, reduce wingtip votives, move the vortice away from a lifting surface, advertising space.

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3
Q

Why does the 737NG have winglets 777 does not?

A

777 is long haul has raked wingtip, reduces overall drag. Induced drag not as critical.

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4
Q

What is the ITCZ?

A

Inter tropical convergence zone, between Hadley cells, low wind speeds , high conductive ss. Moves south in summer. Lots of thunder cells.

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5
Q

Have you flown anywhere with Class D airspace? Is there any speed restrictions associated with class D airspace?

A

250knots below 10,000/200knkts below 2500’ within 4 mn of aerodrome.

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6
Q

If you had a tyre blow at V1 what would your actions be

A

Go

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7
Q

4 Climb out segments and what climb gradients are required in each for 2 eng aircraft?

A
  1. Lift off to gear retraction - positive. 2. Gear retraction to 400’ or acceleration - 2.4% gross. 3.acceleration to clean - positive. 4.enroute climb - 1.2% gross.
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8
Q

Screen height for Dry and Wet RWY

A

(35’/15’)

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9
Q

IFR altimeter limits

A

60ft or 75ft for one sector

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10
Q

Describe Circadian Rhythm

A

??

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11
Q

What is the distance for Cat C manoeuvring area

A

4.2nm

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12
Q

Cat B speeds

A

Initial 120-180, Final 85-130, Circling - 135, Go around - 150

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13
Q

What are the requirements before you descend below minima in the circling area

A

In sight of runway environment. Visibility along the intended flight path. No less the 400’ above obstacles in cat C. Continuous descent at night from downwind to established using normal manoeuvre.

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14
Q

What is the validity of the QNH on an ATIS

A

15min

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15
Q

What are the sources of QNH in Aus

A

ATC, ATIS, AWIS, Approved observer

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16
Q

What is a PAPI

A

gives angle flying to the touchdown point.

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17
Q

What lights do you normally see on a PAPI,

A

2 white and 2 red.

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18
Q

If you saw three white lights and one red one what does this mean.

A

As long as the lights remain constant then you have a higher approach angle same touchdown pt.

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19
Q

Where will you touch down

A

Touch down point

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20
Q

What is T-Vasis, How does it compare to a T-Vasis

A

you are above the 3 degree glideslope and you would land long.

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21
Q

What is the diff btw PAPI and VASI.

A

Papi, if lights are constant it shows change in angle to the same touchdown pt. VASI shows relation to glide path, above or below which will change your touchdown landing long or short.

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22
Q

What is a balanced field length

A

ASDR equal the TODR

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23
Q

Is there any difference when the field is wet

A

V1 will reduce

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24
Q

Lighting requirements prior to dept/arrival - 10min prior departure/39min after takeoff - arrival 30min prior to eTA to completion of taxi

A

Apron, Taxi lighting, Runway edge lighting, Windsock lighting

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25
Q

RWY spacing of lights

A

60m

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26
Q

What does it mean when the RWY centre lights turn red

A

900min alternating. 300m all red

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27
Q

What is the Take off minima visibility

A

300ft and 2km

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28
Q

What is NDV

A

No direction variable

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29
Q

What does it mean

A

Vis in all directions the same

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30
Q

What does TSGR mean on a TAF

A

Thunderstorms with hail

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31
Q

Does PROB30 TSGR require an alternate

A

Yes

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32
Q

If there is a TTF valid during your arrival time without the PROB30 do you still need an alternate

A

No

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33
Q

Validity of a sigmet

A

written on the sigmet and usually 4 hrs

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34
Q

Validity of sig wx, when are they issued.

A

issued every 6 hrs, validity? written on the chart

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35
Q

Climbing out at constant IAS what happens to Mach No and why.

A

Mach increases due to decreasing temperature.

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36
Q

What are the holding speeds, timing, turn directions below FL140

A

230knts, 1min, right

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37
Q

Diff btw B737 wings and the B777 wings and why?

A

Winglets, raked wing tips

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38
Q

Parameters regarding in flight icing

A

Tat+7’c and visible moisture

39
Q

How can we reduce induced drag

A

Winglets, wing fences, reduce the angle of attack.

40
Q

What is induced drag

A

Drag caused by the creation of lift, eg spanwiseflow/wingtip vortices

41
Q

Why do you keep windshield heat on

A

Stops it getting brittle, stops icing, tends to clear moisture.

42
Q

What is EDTO

A

Extended diversion time, certification standards for long distance flights without alternates

43
Q

Swept wings, advantages, disadvantages.

A

Swept wings delay Mach effect. Disadvantages - everything else

44
Q

What happens in the turn with swept wings at low speed

A

Poor at producing lift, high induced drag, stall at low angles of attack.

45
Q

Explain how to operate a turbine engine to get the best SFC and hence maximise range.

A

????

46
Q

What is GPWS

A

Ground proximity warning system

47
Q

Briefly describe how TCAS works

A

Traffic collision avoidance system, uses transponders to compare position and altitude.

48
Q

Tell us about Weather Radar, how does it work

A

It sends tuned radio wave the is reflected by moisture.

49
Q

What is the Tropopause, how does it effect international flying

A

????

50
Q

Why do we have AC and DC power?

A

AC is better over longer distances, less cables

51
Q

Tell us about the final approach fix in Australia, what does the symbol look like

A

????

52
Q

How do you gain EDTO approval

A

????

53
Q

Diff btw ETOPS and now EDTO, what has changed.

A

????

54
Q

Holding time at FL220

A

1min 30sec

55
Q

You are at FL220, TAS 300 kts, how long will it take to complete one holding pattern.

A

5 Mins, = 2x1.5min legs, 2x1 min ends

56
Q

What is induced drag and where is it greatest

A

Lift drag, prior to the stall.

57
Q

What is windshear, considerations

A

Change in wind speed/direction

58
Q

Why have de rated takeoffs

A

Engine life, noise abatement, passenger comfort,

59
Q

When wouldn’t you use reduced thrust t/o

A

Take off limited, threats,

60
Q

Why have variable incidence tailplanes

A

Trims the aircraft without elevator drag, gives you greater control authority over a large range of CofG’s

61
Q

Comm failure under radar control, inbound and outbound.

A

Outbound 2mins, thence as per last clearance. Pink pages

2mins, last clearance.

62
Q

What is the Vis req’t if the HIALS are out for an ILS

A

1.5km hails out

63
Q

What is the required Vis on take off

A

1.5km in NZ 300ft cloud

64
Q

Can PAL be used for an alternate

A

Yes. 2xVHF or 1xHF + 30mins

65
Q

TEMPO 0200-0400 when does it actually come into effect?

A

0100 till 0500

66
Q

What is ADSB (Automatic Dependant Surveillance Broadcast)

A

??

67
Q

What type of battery does your a/c have and why

A

Nicad, constant voltage

68
Q

TS on approach, what are your considerations

A

Wind shear, fuel, microburst, crosswinds, missed approach track.

69
Q

Tell us about windshear

A

?

70
Q

TCAS, how it works and actions you take in the event of RA

A

Follow the RA, confirm with copilot

71
Q

Briefing of a landing with expected windshear.

A

??

72
Q

Speed ranges for Cat B & C for approach

A

(initial, final, circling & missed)

73
Q

Climb at constant TAS what happens to Mach No

A

Increases

74
Q

Timing on a 45 deg procedure turn

A

1min 30seconds

75
Q

Sig Weather chart, when issued and the validity, symbols

A

Valid for within 3 hours of issue time.

Issued every 6 hours.

76
Q

What is the definition of the cord of the wing

A

Line from leading edge to trailing edge

77
Q

Icing system on your aircraft

A

Anti icing probes, windshields. Anti icing Props, horns, side windows. Deciding engine and airframe

78
Q

If you have ice on the props and you can’t clear them what do you do

A

100% override, escape icing conditions

79
Q

MAP gradient, how do you calculate the ROC

A

2.5%. 2.5xgroundspeed

80
Q

Separation in class D airspace

A

Advisory from VFR, full service IFR to IFR

81
Q 
V AUS (B777 ) Specific
What do you know about the B777Weight?
A

Designed in the 90’s, Ge90 engine. 351tonne

82
Q

Tropopause and International ops

A

Point of equal temperature with altitude increase.

83
Q

Safety considerations operating a heavy jet at high altitudes

A

Coffin corner, high speed buffet. Low speed stall.

84
Q

Contries we fly over SYD – AUH

A

Australia- Indonesia - India - Oman - UAE

85
Q

Alternate requirements

A

ETOPS, weather alternates.`

86
Q

Holding levels, speed and direction

A

??

87
Q

15 hour flights, aren’t you going to get bored?

A

??

88
Q

Navigation specifically used on the B777

A

INS

89
Q

How does ring laser gyro work

A

??

90
Q

Fuel planning req’t

A

??

91
Q

Take off vis req’ts

A

2km/300ft. Otherwise reduced vis procedures would apply.

92
Q

Engine of B777, Rated Thrust, spools etc

A

GE90-115b, 115,000lbs, twin spool.

93
Q

Why is it important for the 777 to be on glideslope

A

Momentum, stabilised approach.

Virgin Australia (6 decks)

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