PERFORMANCE

Question 1

Define Gross Performance

Answer 1

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

Question 2

Define Net Performance

Answer 2

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

Question 3

Define the 4 Take-off Climb Performance

Answer 3

• 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

Question 4

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

Answer 4

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

Question 5

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

Answer 5

Clear obstacles by 35 ft

Question 6

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

Answer 6

Gross Gradient reduced by 0,8%

Question 7

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

Answer 7

Green Dot Speed and MTOW

Question 8

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

Answer 8

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

Question 9

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

Answer 9

ALD x 1,67

Question 10

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

Answer 10

ALD x 1,92

Question 11

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

Answer 11

Reduces engine wear and reduces general costs

Question 12

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

Answer 12

1. FLAPS FULL
2. REV MAX
3. Auto BRK MED

Question 13

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

Answer 13

It reduces both approach time and fuel consumption

Question 14

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

Answer 14

A320, below 141 pax
A321, below 168 pax

Question 15

How much can QNH decrease?

Answer 15

1 hpa if using FLEX
No buffer for TOGA

Question 16

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

Answer 16

No, not POOR or UNRELIABLE

Question 17

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

Answer 17

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

Question 18

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

Answer 18

It can’t increase at all

Question 19

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

Answer 19

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

Question 20

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

Answer 20

• 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

Question 21

How is Green Dot calculated below and above 20000 ft?

Answer 21

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