John Heddles
@john-heddles
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Joined: May 14, 2016
Last seen: Jun 12, 2026
Topics: 2 / Replies: 963
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Wake Turbulence KDR Question

Probably worth a few comments here, methinks. First up, the accepted theory of lift (circulation theory .. things long ago progressed past Bernoull...

8 years ago
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Aerodynamics

Now, that's a fairly broad-brush question and not one for which there are simple answers. Perhaps you might give us a little more information as to ...

8 years ago
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PCHART Methodologies

Better still - and it probably will help others - why not do a couple of examples and then post a scan of the charts with commentary. Such might...

8 years ago
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ZFW

Did the question provide a CG/moment/IU ?

8 years ago
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Over water flight - distance for landing

One can divert in one direction .. or, indeed, in the opposite direction ? Therein lies the confusion.

8 years ago
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Performance review questions set 2

Your concern says, very clearly, that the confusion relates to what fuel SG values you are using. Keep in mind that the old "standard" SGs of 0....

8 years ago
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Performance

Following on from my earlier comments. You now have the answer as to how to approach the question. However, it is worth including a comment a...

8 years ago
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Performance

Ah hah ! Now I am in the picture. Afraid you are using the wrong chart. Q8 relates only to the takeoff chart and has naught to do with the climb ...

8 years ago
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Performance

Unfortunately, I don't have any of the paperwork to which you are referring so I'm a little bit wading about in the swamp, here. I had presumed that ...

8 years ago
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Performance

The chart data is there to provide usable information to the pilot. Whence would you obtain TAS as an instrument reading in the cockpit of a smal...

8 years ago
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Clearway at Hobart RWY 30

First, whence comes your 210m figure ?

8 years ago
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Usable fuel definition

"Unusable fuel" is a certification definition and is included in the empty weight of the aircraft - ie, it doesn't come into operational calculations ...

8 years ago
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Crew Communication- AHUF

I'm with you, Sam. Always, with multi-guess questions, test each and every answer to get rid of the wrong ones, first. (a) [color=red][i][b]Assert...

8 years ago
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ADY cyber exam FJ

[color=blue][i][b]So, Im confused. What should it be?[/b][/i][/color] Unfortunately, it is whatever area the examiner might like to prefer, ie whic...

8 years ago
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ADY cyber exam FJ

In short, there is no specific answer to your question. You need to think back to what the coefficient is doing for us. By using non-dimensional ...

8 years ago
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