Definitions

Question 1

A Balanced Field Length occurs when….

Answer 1

ASDR=TODR

Question 2

A clearway can be defined as

Answer 2

The area beyond the end of a runway which an aircraft can safely climb to 35ft

Question 3

When considering V1, suffering an engine failure after V1 but continuing to climb will mean that

Answer 3

it will be possible to attain 35ft within the takeoff distance

Question 4

When calculating V1, do we assume that we have reverse thrust?

Answer 4

No, we assume no reverse thrust (unless a safety factor is applied). But for 727, assume not working.

Question 5

The Vmu (Unstick speed) can be defined as

Answer 5

The minimum speed required to get the aircraft off the ground while maintaining a positive rate of climb and no unsafe characteristics

Question 6

Vr cannot be less than

Answer 6

V1
1.05 Vmca
A speed higher than Vmu
A speed which will not result in an increased takeoff distance if the rotation is commenced 5kts lower than schedules during one-engine inop acceleration, or 10kt slower during all-engine acceleration

Question 7

V2 must not be less than

Answer 7

1. 1 Vmca

1. 2 Vs

Question 8

When considering a V1 speed, what margin do we have to apply above Vef (engine failure speed)

Answer 8

The acceleration which would occur after suffering failure of the critical engine (Vef)

Question 9

How many seconds prior to V1 does the engine failure occur?

Answer 9

1 second. Remember that V1 considers 1 second reaction time.

Question 10

The takeoff run required (TORR) includes a component when the aircraft isn’t actually on the ground, why is this?

Answer 10

A component is added for the liftoff process, and as a safety buffer in case Vr is initiated late (resulting in a longer TORR).

Question 11

When considering ASDR, how many seconds are factored in for pilot recognition and application of stopping process?

Answer 11

4 seconds total:
2 secs brake application
1 sec throttle closure
1 sec spoilers deployed

Question 12

When considering V1 speeds where there is a clearway but no stopway, what happens to the V1 speed?

Answer 12

The V1 speed must be lower so that the TOD is greater than the ASD

Question 13

When a stopway is available but no clearway, what happens to the V1 speed?

Answer 13

V1 speed will increase because you have more tarmac available to stop.

Question 14

Will the V1 speed be increased or decreased with a wet runway?

Answer 14

Decreased (need more distance to stop)

Question 15

On a wet runway, are you stil required to reach 35ft by V2?

Answer 15

No, the height changes to 15ft.

Question 16

In the case of an engine failure after V1, would climbing at a higher or lower speed than V2 give you better climb performance?

Answer 16

Higher! V2 is the minimum climb speed, and any increase will increase climb performance.