Class A Flashcards

1
Q

When does the take off start

Class A

A

Break release

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2
Q

When does take off finish

Class A

A

Screen height

35ft

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3
Q

What is the speed at screen height for class A

A

TOS (take off safety speed) = V2

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4
Q

What is Vef

A

The point at which if a engine fails it will be recognised at V1

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5
Q

What is the min time between Vref and the point at which the pilot recognises + takes action

A

Min of 1 second or longer if proven

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6
Q

What does the 80 knot call out mean

A

Switch from nose-wheel steering to rudder

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7
Q

What are “placarded speeds”

A

V1 / Vr / V2

Must be calculated before takeoff

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8
Q

What speeds must be called out during take off

A

V1 Vr

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9
Q

What is the point where Vstop and Vgo meet

A

Runway limited t/o mass

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10
Q

What happens to Vgo and Vstop with lower mass

A

Lower Vgo

Higher Vstop

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11
Q

What happens to V1 when it’s safer to go

A

Lower V1 speed

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12
Q

What happens to V1 if it’s safer to stop

A

Higher V1

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13
Q

what does upslope do to V1

A

Faster

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14
Q

What does downslope do to V1

A

Slower

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15
Q

What does a headwind do to V1

A

Higher

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16
Q

What does a tailwind do to V1

A

Slower

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17
Q

Vmbe

A

Velocity max brake energy speed

Fastest speed at which brakes can convert all energy into heat and not fade or fail

Must be greater than V1

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18
Q

Vmu

A

Velocity minimum unstick

Lowest cas a aircraft can safely lift off ground + continue take off without hazard

Higher air density = Vmu reduced

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19
Q

Vr

A

Must be less than:

  • V1
  • 1.05 Vmc(a)
  • the speed at which allows V2 to be reached before reaching a height of 35ft

A speed that if rotated at practical max rate results in Vlof =
- 1.10 Vmu all engine
- 1.05 Vmu (n-1)
= aerodynamically limited

-1.08 Vmu all engine
- 1.04 Vmu (n-1)
= geometry limited

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20
Q

Vmc

A

Lowest cas when critical engine fails can be possible to maintain directional control with angle of bank less than 5°

21
Q

V2

A

Min speed that should be reached at 35ft during critical engine failure @v1

May not be less than

  • 1.1Vmc
  • 1.13 Vsr (except 4 eng turbo props and some jets where it’s reduced to 1.08 Vsr)
22
Q

What does the dry take off distance need to be the greater of (class A)

A

Tod n-1 dry

1.15 Tod n dry

23
Q

Tod on wet is the greatest of (class a)

A

Tod n-1 dry

1.15 Tod n dry

Tod n-1 wet

24
Q

What is take off run defined as (class a)

A

Distance from brake release to a point midway between Vlof and 35ft

25
What is Tor wet the greater of Class a
1.15 Tor n wet Tor n-1 wet TOR n-1 dry 1.15 TOR n dry
26
What is the parameters or TOR N-1 wet class a
Break release to 15 above surface speed
27
What is gross ASDR
``` Distance accelerating all engines + Decelerating distance + Distance covered in 2 seconds at V1 ``` 2 seconds is NOT reaction time
28
Runway limited take off mass is... Class a
Heaviest that aircraft can be in the aerodrome conditions to comply with: ASD n dry ASD n-1 dry ASD n-1 / n wet
29
Balanced field is where...
Asda = TODA Or for cap work tora = Asda = TODA
30
If stopway is increased what happens to RLTOM and V1
RLTOM increase As long as V1 increases
31
If clearway is increased what happens to RLTOM and V1
RLTOM increased as long as V1 decreases
32
What is climb limited take off mass also known as
WAT (weight, altitude, temperature) | MAT (mass, altitude, temperature)
33
What is the performance limited take off mass
The lowest of RLTOM CLTOM Tyre limited mass Obstacle limited take off mass
34
If the runway is short what is likely to be the limiting take off mass
RLTOM
35
Is CLTOM wind related
NO DO NOT APPLY WIND
36
Can V1 be lower than Vmcg
No
37
How does upslope / headwind affect Vmbe
Increases
38
What is an increased V2 / improved climb procedure
Increase airspeed by screen height by increasing Vr and V2 Increases excess thrust by delaying onset of induced drag
39
When can a increased V2 procedure be used
Only when RLTOM exceeds CLTOM
40
When is reduced thrust take off not permitted
``` One icy / slippery runways Contaminated runways Anti - skid unserviceable Reverse thrust unserviceable PMC not working In conjunction with increases V2 procedure ```
41
What is de rated thrust setting
Reducing power to either keep ontop of Vmc Or Marry up miss match engines Once set you can not go back to TOGA power Considered normal t/o so can be used on contaminated runway
42
What causes hydroplaning
When the depth of contamination is greater than the depth of tyre tred
43
What is advised when landing on contaminated runway with serviceable anti skid system
Touch down positively + Apply breaks as soon as practical
44
What is the aquaplane velocity calculation
(9 x *squareroot* psi) / Specific gravity
45
How could speeds below Vp be potentially lethal
Because below Vp impingement drag increases with speed and could equal excess thrust
46
What is viscous hydroplaning
Rubber deposits from landing = when wet = slippery
47
What is reverted rubber hydroplaning
When wheels lock on a damp or wet runway rubber reverts to its uncured state on which the tyre skids
48
If anti skid is inoperative what should be done
Reduce mass by 7700kg Then recalculate V speeds Then reduce new V1 by anti skid decrements