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× Welcome to the enquiries forum. this is the place to ask questions relating to our books, our courses or the school. If you have a more specific problem relating to aviation theory, check out the Question and Answer forums. That's the best place to post your technical questions.

Errata

  • Posts: 14
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shaungandrews created the topic: Errata

Hi Guys

Question on errata published on the website..

"19.08.2019

Page 130. Answer to Question No 4. The GS out was used instead of the GS home. The last line of the calculation should have read "178 ÷ 130 = 82 minutes". The corrrect answer is (b)"

The question asked for the distance and time taken from ETP to Bravo, so we should be using GS out @ 190 and not GS home @ 130. Should the original answer (d - 56min) in the textbook not stand?
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SJM replied the topic: Errata

Hi Shaun,
I believe you're correct...

TAS = 160
A->B = 300nm
A->B = 30kt TW
GSout = 160+30 = 190
GShome = 160-30=130

ETP (CP) = Distance x GShome / 2TAS
= 300 x 130/(2(160))
= 122nm

ETP to Bravo distance = 300 - 122 = 178nm
ETP to Bravo time = 178nm @ 190kts = 56 min
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