PERFORMANCE Flashcards

1
Q

Define Gross Performance

A

The average performance that a fleet of aircrafts should be able to achieve if satisfactorily maintained and flown with techniques described in the manuals

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2
Q

Define Net Performance

A

Gross Performance diminished to allow allow for various contingencies that cannot be accounted for operationally, such as variations in pilot techniques etc

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3
Q

Define the 4 Take-off Climb Performance

A
  • 1st, from lift-off until landing gear is retracted
  • 2nd, from gear up until acceleration starts at the
    Flap Retraction Altitude
  • 3rd, acceleration phase until flaps are retracted
  • 4rd, Clean climb at MCT until 1500 ft
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4
Q

What are the percentage gross climb gradients in the 4 Take-off Climb Performance Segments?

A

1st, more than 0,0%
2nd, 2,4%
3rd, 1,2% but normally flown level
4rd, 1,2%

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5
Q

What is the obstacle clearance requirements in the 4 Take-off Climb Performance Segments?

A

Clear obstacles by 35 ft

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6
Q

What is the net gradient in the 4 Take-off Climb Performance Segments?

A

Gross Gradient reduced by 0,8%

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7
Q

Up to what speed and weight is are Engine Inoperative Procedures assessed?

A

Green Dot Speed and MTOW

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8
Q

If MAX ACC ALT is calculated with a FLEX take-off, what happens to it if TOGA is used instead?

A

The MAX ACC ALT will increase due to higher level of thrust available and the increased climb potential in the 10 min time limit period

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9
Q

How is the required landing distance calculated on a dry runway?

A

ALD x 1,67

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10
Q

How is the required landing distance calculated on a wet runway?

A

ALD x 1,92

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11
Q

What is the benefit of using FLEX thrust on take off?

A

Reduces engine wear and reduces general costs

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12
Q

If crew needs to reduce the landing distance, in which order or priority should deceleration options be used?

A
  1. FLAPS FULL
  2. REV MAX
  3. Auto BRK MED
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13
Q

What is the benefit of using a FLAP 3 configuration on approach?

A

It reduces both approach time and fuel consumption

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14
Q

When do we set the PACK FLOW selector to LO on a A320 and a A321?

A

A320, below 141 pax
A321, below 168 pax

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15
Q

How much can QNH decrease?

A

1 hpa if using FLEX
No buffer for TOGA

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16
Q

Are we allowed to use a runway with reported Brake Action “POOR”?

A

No, not POOR or UNRELIABLE

17
Q

If Flysmart calculation shows CONF 2 or CONF 3 for takeoff, can a lower flap setting be considered?

A

Yes, if a calculation with the lower Flap setting is done and it gives the same FLEX as for the higher setting

18
Q

By how much can the actual TOW increase from the TOW used for Performance Calculation?

A

It can’t increase at all

19
Q

What is the impact on using a FLEX take off on fuel burn?

A

It increases fuel burn due to lower thrust which increase the time for take-off
It does increase engine life

20
Q

What is the impact on using a PACK OFF take off?

A
  • Improves performance if TOGA is used
    -Reduces EGT and maintenance costs if FLEX is used
    -Burns less fuel as engine dont have to produce the extra bleed air
21
Q

How is Green Dot calculated below and above 20000 ft?

A

Below: 2 x weight +85
Above: add 1 kt / 1000 ft