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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Calculating track change

Kejt It really would help out if you drew a mud map sketch. That is far easier than trying to interpret a text description of whatever ....

1 year ago
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CPL performance exam 2 Q1

I'll leave working the example unless you have continuing problems with it. I will presume that Wayne's calculations are appropriate. Some observ...

1 year ago
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1 year ago
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Need urgent answer please for a CPL Performance Aeroplane question

Try this link and download MOS Part 139 which has all the good gen. If you download the pdf file the section of interest is around p130.

1 year ago
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Any advice about materials brought to the RPL exam?

Yingzhou, Most of the references you will read provide simple numerical calculation sequences but in reverse order to how one does the basic sums a...

1 year ago
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Navigation Workbook Magnetic Heading and Ground Speed on CR3

[color=blue]186 is the track yes - apologies used the wrong term[/color] All OK. [color=blue]TC - True Course[/color] That's US-speak for ou...

1 year ago
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Aerodynamics tutor

Where abouts are you located, specifically ?

1 year ago
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Navigation Workbook Magnetic Heading and Ground Speed on CR3

[color=blue]When you say "clones" is there a better device to get?[/color] First, does yours have a problem ? On the calc side, line up the outer...

1 year ago
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Navigation Workbook Magnetic Heading and Ground Speed on CR3

[color=blue]Now I am worried that my CR-3 is broken[/color] There doesn't look to be anything terribly wrong with your device. However, you have...

1 year ago
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Buying your first aircraft

Outside my ambit, Ravi, so I can't offer anything specific. However, there are plenty of folks who do what you are proposing. I would track do...

1 year ago
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Navigation Workbook Magnetic Heading and Ground Speed on CR3

[color=blue]I get a True Heading of 197 degrees (using the 11 degrees crab angle) - the work book has 198 which I assume is because the 12 degrees ang...

1 year ago
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Navigation Workbook Magnetic Heading and Ground Speed on CR3

It would help those of us who don't have the workbook to hand were you to post the question details ?

1 year ago
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CPL Aero | INERTIA & flight path

First, let's have a think about this inertia animal, which is related to mass, ie how much stuff is in a thing. Or, if you like, more mass, more wei...

1 year ago
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1 year ago
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Aerodynamic exercise A3 Q28

Try to keep endurance (power) and range (drag or thrust) separate in your thinking. For a light piston aircraft, endurance relates to fuel flow whi...

1 year ago
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