Energy management tips

Question 1

Good check when reaching FL100?

Answer 1

30nm——FL100——250kt

Question 2

Wind corrections

Answer 2

10kts = 1nm

Tailwind +

Headwind -

Question 3

1:3 rule?

Answer 3

To descend 1000ft we need 3nm

Question 3

Weight correction

Answer 3

58 Tn is the reference

1 tn = 1nm

Example: 64 tn = 6nm

Question 4

321 rule?

Answer 4

At 10nm——— 3000ft…..200kt……flaps 1

Question 5

To comply restriction of FL 100 at 250kt

Answer 5

Generally descending at 280kts
At FL 110 or 105

• v/s -200ft/m
• speed 250kt

Or set MCP altitude 10000ft and the acft will level at that altitude. When decelerate to desire speed continue descent with lvl chg or v/s

Or at FL100 push alt hold

Question 6

How to get a high FPA descent?

Answer 6

• 200kt…..flaps 5…..speedbrake = FPA 4.0

* 180 kt….flaps 10…..speedbrake = FPA 5.0

Question 7

Approaching straight deceleration

We can draw 3 arcs of 15, 10 and 5 no by the following:

Answer 7

• 15 nm arc: decelerate from 250kt to Fup speed
• 10nm arc: 200kt flap 1 (321 rule)
• 5nm arc: 160kt flap 15

Question 8

While using 3:1 rule, how do you calculate your rate of descent and approach?

Answer 8

speed X 5= rate of descent

Example:

• approach:

Gs=400 kt => r/d= 2000ft/min

During descent use TAS / 2

Question 9

Rapid FPA calculations

Answer 9

Descending at :

• 250kt…………fpa 2,5 aprox
• 300kt……….fpa 3.0 aprox