Tech Flashcards
What is MCRIT?
The point at which a localised airflow goes supersonic
What are winglets and what do they do?
Increase the aspect ratio, reduce induced drag, smaller gates, reduce wingtip votives, move the vortice away from a lifting surface, advertising space.
Why does the 737NG have winglets 777 does not?
777 is long haul has raked wingtip, reduces overall drag. Induced drag not as critical.
What is the ITCZ?
Inter tropical convergence zone, between Hadley cells, low wind speeds , high conductive ss. Moves south in summer. Lots of thunder cells.
Have you flown anywhere with Class D airspace? Is there any speed restrictions associated with class D airspace?
250knots below 10,000/200knkts below 2500’ within 4 mn of aerodrome.
If you had a tyre blow at V1 what would your actions be
Go
4 Climb out segments and what climb gradients are required in each for 2 eng aircraft?
- 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.
Screen height for Dry and Wet RWY
(35’/15’)
IFR altimeter limits
60ft or 75ft for one sector
Describe Circadian Rhythm
??
What is the distance for Cat C manoeuvring area
4.2nm
Cat B speeds
Initial 120-180, Final 85-130, Circling - 135, Go around - 150
What are the requirements before you descend below minima in the circling area
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.
What is the validity of the QNH on an ATIS
15min
What are the sources of QNH in Aus
ATC, ATIS, AWIS, Approved observer
What is a PAPI
gives angle flying to the touchdown point.
What lights do you normally see on a PAPI,
2 white and 2 red.
If you saw three white lights and one red one what does this mean.
As long as the lights remain constant then you have a higher approach angle same touchdown pt.
Where will you touch down
Touch down point
What is T-Vasis, How does it compare to a T-Vasis
you are above the 3 degree glideslope and you would land long.
What is the diff btw PAPI and VASI.
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.
What is a balanced field length
ASDR equal the TODR
Is there any difference when the field is wet
V1 will reduce
Lighting requirements prior to dept/arrival - 10min prior departure/39min after takeoff - arrival 30min prior to eTA to completion of taxi
Apron, Taxi lighting, Runway edge lighting, Windsock lighting
RWY spacing of lights
60m
What does it mean when the RWY centre lights turn red
900min alternating. 300m all red
What is the Take off minima visibility
300ft and 2km
What is NDV
No direction variable
What does it mean
Vis in all directions the same
What does TSGR mean on a TAF
Thunderstorms with hail
Does PROB30 TSGR require an alternate
Yes
If there is a TTF valid during your arrival time without the PROB30 do you still need an alternate
No
Validity of a sigmet
written on the sigmet and usually 4 hrs
Validity of sig wx, when are they issued.
issued every 6 hrs, validity? written on the chart
Climbing out at constant IAS what happens to Mach No and why.
Mach increases due to decreasing temperature.
What are the holding speeds, timing, turn directions below FL140
230knts, 1min, right
Diff btw B737 wings and the B777 wings and why?
Winglets, raked wing tips
Parameters regarding in flight icing
Tat+7’c and visible moisture
How can we reduce induced drag
Winglets, wing fences, reduce the angle of attack.
What is induced drag
Drag caused by the creation of lift, eg spanwiseflow/wingtip vortices
Why do you keep windshield heat on
Stops it getting brittle, stops icing, tends to clear moisture.
What is EDTO
Extended diversion time, certification standards for long distance flights without alternates
Swept wings, advantages, disadvantages.
Swept wings delay Mach effect. Disadvantages - everything else
What happens in the turn with swept wings at low speed
Poor at producing lift, high induced drag, stall at low angles of attack.
Explain how to operate a turbine engine to get the best SFC and hence maximise range.
????
What is GPWS
Ground proximity warning system
Briefly describe how TCAS works
Traffic collision avoidance system, uses transponders to compare position and altitude.
Tell us about Weather Radar, how does it work
It sends tuned radio wave the is reflected by moisture.
What is the Tropopause, how does it effect international flying
????
Why do we have AC and DC power?
AC is better over longer distances, less cables
Tell us about the final approach fix in Australia, what does the symbol look like
????
How do you gain EDTO approval
????
Diff btw ETOPS and now EDTO, what has changed.
????
Holding time at FL220
1min 30sec
You are at FL220, TAS 300 kts, how long will it take to complete one holding pattern.
5 Mins, = 2x1.5min legs, 2x1 min ends
What is induced drag and where is it greatest
Lift drag, prior to the stall.
What is windshear, considerations
Change in wind speed/direction
Why have de rated takeoffs
Engine life, noise abatement, passenger comfort,
When wouldn’t you use reduced thrust t/o
Take off limited, threats,
Why have variable incidence tailplanes
Trims the aircraft without elevator drag, gives you greater control authority over a large range of CofG’s
Comm failure under radar control, inbound and outbound.
Outbound 2mins, thence as per last clearance. Pink pages
2mins, last clearance.
What is the Vis req’t if the HIALS are out for an ILS
1.5km hails out
What is the required Vis on take off
1.5km in NZ 300ft cloud
Can PAL be used for an alternate
Yes. 2xVHF or 1xHF + 30mins
TEMPO 0200-0400 when does it actually come into effect?
0100 till 0500
What is ADSB (Automatic Dependant Surveillance Broadcast)
??
What type of battery does your a/c have and why
Nicad, constant voltage
TS on approach, what are your considerations
Wind shear, fuel, microburst, crosswinds, missed approach track.
Tell us about windshear
?
TCAS, how it works and actions you take in the event of RA
Follow the RA, confirm with copilot
Briefing of a landing with expected windshear.
??
Speed ranges for Cat B & C for approach
(initial, final, circling & missed)
Climb at constant TAS what happens to Mach No
Increases
Timing on a 45 deg procedure turn
1min 30seconds
Sig Weather chart, when issued and the validity, symbols
Valid for within 3 hours of issue time.
Issued every 6 hours.
What is the definition of the cord of the wing
Line from leading edge to trailing edge
Icing system on your aircraft
Anti icing probes, windshields. Anti icing Props, horns, side windows. Deciding engine and airframe
If you have ice on the props and you can’t clear them what do you do
100% override, escape icing conditions
MAP gradient, how do you calculate the ROC
2.5%. 2.5xgroundspeed
Separation in class D airspace
Advisory from VFR, full service IFR to IFR
V AUS (B777 ) Specific What do you know about the B777Weight?
Designed in the 90’s, Ge90 engine. 351tonne
Tropopause and International ops
Point of equal temperature with altitude increase.
Safety considerations operating a heavy jet at high altitudes
Coffin corner, high speed buffet. Low speed stall.
Contries we fly over SYD – AUH
Australia- Indonesia - India - Oman - UAE
Alternate requirements
ETOPS, weather alternates.`
Holding levels, speed and direction
??
15 hour flights, aren’t you going to get bored?
??
Navigation specifically used on the B777
INS
How does ring laser gyro work
??
Fuel planning req’t
??
Take off vis req’ts
2km/300ft. Otherwise reduced vis procedures would apply.
Engine of B777, Rated Thrust, spools etc
GE90-115b, 115,000lbs, twin spool.
Why is it important for the 777 to be on glideslope
Momentum, stabilised approach.
