John Heddles
@john-heddles
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Joined: May 14, 2016
Last seen: Feb 14, 2026
Topics: 2 / Replies: 957
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Accuracy in calculations

Bob, Well done, good sir, on passing the 80-candle-blowing-out-rite-of-passage! Thoroughly concur with your accuracy philosophy. My very best...

5 years ago
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Inclusion of runway slope

Runway slope is a bit of a rubbery animal. Very few runways will have a uniform (constant) slope. Some have quite variable slope along the run...

5 years ago
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Ambient vs Forecast Conditions - P Chart

[color=blue][i][b].. is this an actual (or ambient) wind .. or is it a forecast wind[/b][/i][/color] The distinction is made between takeoff and ot...

5 years ago
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wind speed and flight planning

Perhaps you might post a couple of the problem examples with your working and picture of your nav computer's solution? It is not easy to offer com...

5 years ago
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Good old runway

[color=blue][i][b] I’m not liking it very much[/b][/i][/color] Stick with it - it really does get easier the more you read and think about it. ...

5 years ago
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Good old runway

I think you've answered your question in your question. I suspect that the exams are likely to confine themselves generally to the runway width rath...

5 years ago
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CPL Navigation - Finding the actual wind in flight by using a CR3

Bob's being restrained and kind. First, maybe you could review/practice your use of the CR device and you will find that your answers improve a bit ...

5 years ago
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Performance: Take off Weight Charts

First, what does the question mean ? [color=blue][i][b]Runways 15/33 and Slope is 2% Down to the SE[/b][/i][/color] means - (a) if the takeof...

5 years ago
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Determine track from heading and wind

(a) if it's in the syllabus, it's fair game for the exam. (b) simple enough standard use of any of the navigation calculators (or, if you really wa...

5 years ago
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Performance chart

The study stuff at PPL/CPL doesn't go into this sort of material to any extent and some courses not at all. The only requirement of note is the old...

5 years ago
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Performance chart

What a rather silly round about question. [color=blue][i][b]The take off performance charts indicate the aircraft climb limitation is greater than ...

5 years ago
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P chart assumptions

[color=blue][i][b]landing distance performance charts assume that any reported headwind is factored down by 50%.[/b][/i][/color] .. and takeoff cha...

5 years ago
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Only given IU

[color=blue][i][b]That is not our question John[/b][/i][/color] My confusion. Apologies for the comment. However, when Sophie posts some more ...

5 years ago
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Only given IU

Sophie, I'm not surprised that you experienced some confusion - the question is unsound. However, let's have a look at the working and we can ide...

5 years ago
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Only given IU

[color=blue][i][b]given GW/ total moment index at taxi is 2700 kg/ 740[/b][/i][/color] That's fine. [color=blue][i][b]find the min amount of fue...

5 years ago
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