Notifications
Clear all

SID Departure - Compensation for wind

7 Posts
2 Users
0 Reactions
1,674 Views
(@user6317)
Active Member Customer
Joined: 14 hours ago
Posts: 7
Topic starter  

Goodnight once again. Just some confusion on one question in regards to the subject mentioned..

Question :

You departing Sydney TWO DEPARTURE (RADAR) runway 07, clear to 2500ft, TAS 150 and a 10kts tailwind , what is the initial rate of climb?

Formula:

Rate of Climb or decent = [Climb Gradient] x [Ground speed (GS)

When doing this question I pick 5.6% x 160 = 840ft/min. But my answer was wrong❌..

Please find attached is a Copy of DAP east, Sydney TWO DEPARTURE RADAR and confirm which Climb gradient to used.. should it be; 3.3% or 4.7%

Thank you for your time. See you then.
Stay blessed,and have a wonderful night..

Ju.Teter



   
Quote
Stjepan Nikolic
(@bosi72)
Estimable Member Customer
Joined: 6 years ago
Posts: 160
 

One of the key points at the exam (and whilst flying too), is to be accurate.

Firstly why did you pick departure from rwy 25 (5.6%), when the question is asking departure from rwy 07 (4.7%) ?
Secondly, when you multiply 5.6 x 160 = 896, not 840 as in your post.

A few advices..
Do it slowly, but be accurate, not fast !
Double check your results and do the sanity cross-check too.

Once you get accurracy, the speed will come with (accurate) practice.

Before posting a question, confirm whether the answer is in irex errata page.

Good luck at the exam.



   
ReplyQuote
(@user6317)
Active Member Customer
Joined: 14 hours ago
Posts: 7
Topic starter  

Hii then,

You're right...my mistake 840, should be 896.

Soo it doesn't matter what height they give me to climb to like the one in the question 2500ft, but the main idea is to focus on which runway to used if mention and its gradient??? Even if the gradient used is up to 1500ft not 2500ft?



   
ReplyQuote
Stjepan Nikolic
(@bosi72)
Estimable Member Customer
Joined: 6 years ago
Posts: 160
 

[quote="Jubteter@gmail.com post=14479 userid=6317"]Hii then,

You're right...my mistake 840, should be 896.

Soo it doesn't matter what height they give me to climb to like the one in the question 2500ft, but the main idea is to focus on which runway to used if mention and its gradient??? Even if the gradient used is up to 1500ft not 2500ft?

Read the last sentence from the question again "..what is the [u]initial[/u] rate of climb?"
Note the word "initial"...



   
ReplyQuote
(@user6317)
Active Member Customer
Joined: 14 hours ago
Posts: 7
Topic starter  

OMG it's 3.3%. the words says it all..
it's written in the AIP ENR 1.5 - 39 para 8.1.4



   
ReplyQuote
Stjepan Nikolic
(@bosi72)
Estimable Member Customer
Joined: 6 years ago
Posts: 160
 

ATC gives you a clearance to depart on SID Sydney TWO DEPARTURE (RADAR) runway 07.

Will you open a SID plate, or AIP?



   
ReplyQuote
(@user6317)
Active Member Customer
Joined: 14 hours ago
Posts: 7
Topic starter  

The question is referring to SID plate For runway 07 with 4.7% climb gradient...yeah you're right it's 4.7%..its the initial climb gradient of Runway 07..



   
ReplyQuote
Share: