John Heddles
@john-heddles
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Joined: May 14, 2016
Last seen: Jan 20, 2026
Topics: 2 / Replies: 951
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Declared Density Charts?

One needs to keep in mind that the declared charts date back to developmental air services which are now rather dated in concept. They were never te...

4 years ago
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Armidale WAC pdf link?

[color=blue][i][b]I don’t think a photo will be quite as accurate as what is required for the 1 in 60 exercises.[/b][/i][/color] Keep in mind that ...

4 years ago
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Convection VS adiabatic

[color=blue][b][i]as air sinks it compresses adiabatically, so it gets warmer,[/i][/b][/color] That's what we would expect to happen. [i][b][co...

4 years ago
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Convection VS adiabatic

Have a read of this link. Don't fuss too much over the equations - rather read the text and think about what it might mean. After you have done ...

4 years ago
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tODA/TODR

[i]Suggest you download, read, and keep for reference Part 139 MOS which has the general (certified) aerodrome stuff available. CAAP 92-1 provides in...

4 years ago
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Practice Exam Question - Take-off charts

Sorry, Stuart, I should have been more precise in my comment. My reference was to whoever originally generated the chart rather than its immediate l...

4 years ago
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Heads and tails

Sophie, you're tending to overthink this a little, methinks. First, a useful little mnemonic - which appears to date back to the quite early days o...

4 years ago
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XWind conversion chart - wind components

If you want to be a little bit clever and save time, providing that you use a Jeppesen CR style computer, the whizz wheel gives you the numbers quicke...

4 years ago
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Practice Exam Question - Take-off charts

[color=blue][i][b]I'll have a look at this one and see how accurate the original work might have been.[/b][/i][/color] I've checked a few points. ...

4 years ago
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RMI

Ah, Bosi has saved me the trouble - well done. The only practical comment to emphasise, is that, as part of the intercept of the final, desired tra...

4 years ago
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Performance

We need to keep in mind that the AIP relates to all aircraft and its primary interest tends more to heavy aircraft rather than the light GA fraternity...

4 years ago
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RMI

I haven't forgotten this one, Sophie. Been a tad busy elsewhere. Will try to finalise a response tonight.

4 years ago
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Practice Exam Question - Take-off charts

I think you really must start paying more attention to what you read, detail and housekeeping. From several of your threads what comes across, very ...

4 years ago
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Maneuvering Speed with weight

You may be interested in looking at an ultimate load certification test on the net. The following link shows the B777 test program. Notice just ho...

4 years ago
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Maneuvering Speed with weight

So, where does this leave us as pilots ? First, min Va is not an unrestricted “yank and bank” speed limit as the old style military would have it -...

4 years ago
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