John Heddles
@john-heddles
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Joined: May 14, 2016
Last seen: Jan 21, 2026
Topics: 2 / Replies: 951
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P charts and slopes

With a certification engineering hat on, which is my background, I'd probably take a somewhat softer line than Bob on this one .. CAO 20.7.4.1.a...

6 years ago
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P charts and slopes

Why would you not use the actual slope for the particular runway ?

6 years ago
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CPL air law flight duty times

I checked this point with the examiner recently. When any of the rules change, the exam changes and reflects the current rules. So, no, the old ru...

6 years ago
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Tingling - issue with table in book?

Be very wary of trying to push hypoxic symptoms into a neat box. One of the reasons the military require chamber runs is to accustom folks to th...

6 years ago
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Texture flow

Not my area of expertise but you might like to have a look at some of the links in this search -

6 years ago
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CAO 48.1 (2019) now current

I'll leave it to Bob to speak to the book. However, to be fair, it does take a little while to revise stuff, especially with the workload of all subj...

6 years ago
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Are their two fixed reserves while doing fuel calculations?

Fair questions. [color=blue][i][b] fixed reserves are reserves used for holding.[/b][/i][/color] Yes, but the intent is for serious emergency h...

6 years ago
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The quartering tailwind

In this sense, "quarter" or "quartering" derives from traditional nautical practice, such as in That is, if you are pointing north, say, a quarterin...

6 years ago
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Aircraft Trim Sheet loading

Looking at the C172 examples, at [attachment=1534]C172S_WB.pdf[/attachment], and [attachment=1535]C172_G1000_WB.pdf[/attachment] The data f...

6 years ago
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Factor affecting endurance

Range - you would like actually to get somewhere useful. As the wind has a direct influence on G/S, the specific ground range (SGR) (which is the r...

6 years ago
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Aircraft Trim Sheet loading

The C206 data referred to by PJ045 is available at the link cited in the earlier post and on this site at - [attachment=1533]C206G_WB.pdf[/attachm...

6 years ago
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Average sound for light A/C

I can't comment on whether you have transcribed the question correctly or your KDR. However, ONLY option (a), as you have posted it, can be corr...

6 years ago
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Average sound for light A/C

That you ask this question suggests that you haven't read up on noise engineering at all and, in particular, typical sound pressure levels (ie those d...

6 years ago
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Aircraft Trim Sheet loading

We've been fairly careful, so far, to avoid identifying operators and WCOs. That's going to be a bit difficult here as the source link is identified ...

6 years ago
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Exam fail - words of advice please

Bob's advice is very much correct and to the point. The other technique which helps when you then get to actually selecting the answer is to identi...

6 years ago
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