Take-off Performance Values Quiz

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Questions and Answers

Which of the following values may be used in the assessment of take-off performance?

Actual

Forecast

Reported

Expected

1 only

1 & 2

1 & 3 (correct)

Any of them

For which of the following flights may forecast temperatures (as opposed to actual or reported) be used in assessing performance?

Take-off

Enroute

Landing

2 & 3 (correct)

All of them

Published take-off performance data for aircraft in Performance Group A makes allowance for use of a runway line up distance of:

* Nil (correct)

*100M

*200M

*4 x longitudinal distance from nose wheel axle to rear main gear axle

Given the following data, which is the overall gradient on runway 07?

Elevation at start of rwy 07 is 3050 Elevation at start of rwy 25 is 2830 Legth 2745m.

0.24% downslope Signup and view all the answers

Which is true of runway slope in relation to performance calculation for aircraft in Performance Group A?

If you expect to use less than the whole runway, the value employed should take account of this fact Signup and view all the answers

For which airplane in Performance Group A is this statement true?

"If an alternate airport is designated in the flight plan, the landing distance required may be that appropriate to an alternate aerodrome when assessing the ability of the airplane to satisfy the requirement of the destination aerodrome."

Turbo prop and piston engine Signup and view all the answers

For a given declared temperature at which the aircraft performance is being assessed, if it is within a certain temperature of the maximum aircraft operating temperature, the use of declared temperature is not permitted.

5°C Signup and view all the answers

Which is true of the declared distance for a given runway?

The maximum slope for a clearway plane is 1.25% Signup and view all the answers

Which is true about TODA?

It is useable runway length plus clearway Signup and view all the answers

Which is true of the declared distance for a given runway?

ASDA comprises the useable runway length plus any stopway Signup and view all the answers

Which is true of the declared distance for a given runway?

Stopway must be able to support an aircraft without causing structural damage. Signup and view all the answers

Which is the correct procedure in relation to the moment at which an engine failure is recognised?

If it is over V2, maintain speed at engine failure up to flap retraction height Signup and view all the answers

Assuming take-off weight, V1/Vr ratio and aerodrome ambient condition remain constant. A decrease in take-off flap setting will cause:

V1 & V2 to increase Signup and view all the answers

Minimum control speed (Vmcg) on the ground:

Decreases with an increase in ambient temperature for the same pressure altitude Signup and view all the answers

Which is true of Vmcg on the ground?

It increases with a decrease in ambient temperature for the same pressure altitude Signup and view all the answers

In addition to runway slope and wind component, which one of the following sets of factors affects the brake energy (Vmbe)?

Aeroplane weight, aerodrome pressure altitude and ambient temperature Signup and view all the answers

Regarding improved V2 climb, which statements are correct?

Increasing V2 requires an increase in V1 and Vr .

Increase in takeoff speeds (V1VrV2) increases TODR .

Takeoff climb limit weight is reduced .

With an increase in takeoff speed, tyre speed limit and Vmbe may become limiting

1, 2 & 4 Signup and view all the answers

Takeoff decision speed (V1) is the speed:

from which a decision to continue the takeoff is made, which results in a takeoff distance to a height of 35ft on a dry runway at a speed of V2, that will not exceed the useable takeoff distance.

at which the engine failure is recognised

at which the first action is taken to bring the aeroplane to a full stop and will not exceed the ASDA

1 & 3 Signup and view all the answers

When an aeroplane take-off weight is not field length limited, the benefits of selecting a lower V1 are:

Improved obstacle clearance

Reduced aircraft noise

Greater stop margin for a RTO

Decrease chance of exceeding Vmb

3 & 4 Signup and view all the answers

Which one of the following is correct in relation to takeoff flight path?

The gross level off height is the maximum height at which the acceleration segment may be scheduled using take-off thrust Signup and view all the answers

When an obstacle is to be cleared, on the basis of an extended second segment climb:

It can be any obstacle in the take-off flight path Signup and view all the answers

What thrust settings should be used for operating engines in the third segment of the flight path?

Take-off Signup and view all the answers

Select the answer which you consider will correctly complete the following statement.

"The net takeoff flight path extends from (i) to 1500' above aerodrome level, and should clear any obstacle in its path by a vertical interval of (ii)"

(i) 35' above the end of the TODR (ii) 35' or 50' during a turn exceeding 15° change in direction. Signup and view all the answers

The minimum level off pressure altitude, as applied to the clearance of distant obstacles when using the extended second segment climb procedure, may be defined as:

The altitude below which acceleration and flap retraction should not be scheduled Signup and view all the answers

An obstacle is identified as being 5920m from the end of the take-off distance available, and is 830m from the intended line of flight. Given the wing span of the aircraft is 48m, the semi width of the funnel at a given point is?

824m, thus the obstacle is insignificant Signup and view all the answers

Takeoff WAT curve for an aircraft in Performance Group A assumes:

Engine failure on the ground Signup and view all the answers

At a given take-off weight, aerodrome ambient conditions and characteristics, an increase in take-off flap setting will (i) the second segment climb gradient and (ii) the takeoff distance required.

(i) decrease (ii) decrease Signup and view all the answers

Decrease flap from 10° to 5° will result in :

Increase in field length limit for a given runway

Increase climb limit weight

Increase V1 speed for a given weight

2 & 3 Signup and view all the answers

"All other factors remaining constant, a decrease in aerodrome pressure altitude will: (i) the take-off distance required and (ii) the second segment net gradient of climb.

(i) decrease (ii) increase Signup and view all the answers

Using a higher V2 (i) TODR and (ii) distance to an obstacle, resulting in a (iii) climb gradient required.

(i) increases (ii) decreases (iii) increased Signup and view all the answers

Obstacle height is generally referenced to the elevation at the end of the TODA. Assuming the climb gradient is constant, the flight path of an uphill slope runway will begin at a relatively (i) elevation relative to a downhill slope.

lower Signup and view all the answers

Using a wet V1 on a wet runway, compared to a dry V1 on a dry runway, in the event of an engine failure the safety margin with a continued take-off will:

always decrease Signup and view all the answers

Operations involving the use of variable take-off thrust may be conducted:

in conditions where the performance limit take-off weight at the ambient temperature exceeds the actual take-off weight. Signup and view all the answers

Which of the following statements is true concerning operations involving the use of variable take-off thrust?

An acceptable assumed temperature may be described as one at which the performance limit takeoff weight equals or exceeds the actual take-off weight. Signup and view all the answers

Which one of the following statements is true concerning the calculation of the maximum speed for abandoning take-off Vstop on a contaminated runway

Vstop may be less than Vmcg Signup and view all the answers

Which is a recommended procedure when operating from a contaminated runway?

A check should be made that all retardation devices are serviceable and that tyres are in good condition Signup and view all the answers

Which of the following statements are true concerning operation on a contaminated runway?

Any significant loss of runway distance available due to line up for take-off should taken into account for and take-off performance. Signup and view all the answers

Which of the following is correct concerning weight and performance provisions/regulations during the enroute phase of flight involving an engine failure?

Account may be taken of any reduction of weight of the aeroplane which may be achieved by jettisoning fuel in accordance with the prescribed procedures. Signup and view all the answers

In the case of engine failure, the aeroplane must be capable of clearing all objects on either side of the intended track within:

10nm

5nm providing the operator takes into account navigational aide enroute

20nm in mountainous areas

1 & 2 Signup and view all the answers

Landing distance correction factor for (i) forecast headwind component (ii) foreacast tailwind component.

(i) not more than 50% (ii) not less than 150% Signup and view all the answers

The landing WAT curve or graph ensures that at a given weight, the aeroplane will have an acceptable minimum climb capability with:

One engine inoperative and with all engine operating Signup and view all the answers

Study Notes