PERFORMANCE Flashcards
Define Gross Performance
The average performance that a fleet of aircrafts should be able to achieve if satisfactorily maintained and flown with techniques described in the manuals
Define Net Performance
Gross Performance diminished to allow allow for various contingencies that cannot be accounted for operationally, such as variations in pilot techniques etc
Define the 4 Take-off Climb Segments
- 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
What are the percentage gross climb gradients in the 4 Take-off Climb Performance Segments?
1st, more than 0,0%
2nd, 2,4%
3rd, 1,2% but normally flown level
4rd, 1,2%
What is the obstacle clearance requirements in the 4 Take-off Climb Performance Segments?
Clear obstacles by 35 ft
What is the net gradient in the 4 Take-off Climb Performance Segments?
Gross Gradient reduced by 0,8%
Up to what speed and weight is are Engine Inoperative Procedures assessed?
Green Dot Speed and MTOW
If MAX ACC ALT is calculated with a FLEX take-off, what happens to it if TOGA is used instead?
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
How is the required landing distance calculated on a dry runway?
ALD x 1,67
How is the required landing distance calculated on a wet runway?
ALD x 1,92
What is the benefit of using FLEX thrust on take off?
Reduces engine wear and reduces general costs
If crew needs to reduce the landing distance, in which order or priority should deceleration options be used?
- FLAPS FULL
- REV MAX
- Auto BRK MED
What is the benefit of using a FLAP 3 configuration on approach?
It reduces both approach time and fuel consumption
When do we set the PACK FLOW selector to LO on a A320 and a A321?
A320, below 141 pax
A321, below 168 pax
How much can QNH decrease?
1 hpa if using FLEX
No buffer for TOGA
Are we allowed to use a runway with reported Brake Action “POOR”?
No, not POOR or UNRELIABLE
If Flysmart calculation shows CONF 2 or CONF 3 for takeoff, can a lower flap setting be considered?
Yes, if a calculation with the lower Flap setting is done and it gives the same FLEX as for the higher setting
By how much can the actual TOW increase from the TOW used for Performance Calculation?
It can’t increase at all
What is the impact on using a FLEX take off on fuel burn?
It increases fuel burn due to lower thrust which increase the time for take-off
It does increase engine life
What is the impact on using a PACK OFF take off?
- 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
How is Green Dot calculated below and above 20000 ft?
Below: 2 x weight +85
Above: add 1 kt / 1000 ft
