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Revision Exercise 2.1, Q6, Page 103

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Jase88 created the topic: Revision Exercise 2.1, Q6, Page 103

Hi all,

Please find attached image.

Just trying to figure out where the 90 nautical miles comes from in the answer explanation? Finding irex pretty dry so there's a fair chance that I haven't read something thoroughly enough again.

Thanks
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bobtait replied the topic: Revision Exercise 2.1, Q6, Page 103

90 nm is the rated coverage of VHF aids if you are above 5000ft. You cannot claim a fix unless you are within the rated coverage. See AIP GEN 1.5 para 2.3.

Bob
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Jase88 replied the topic: Revision Exercise 2.1, Q6, Page 103

Thanks Bob,

Would this diagram be correct with working this one out then?

Thanks
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bobtait replied the topic: Revision Exercise 2.1, Q6, Page 103

Two requirements must be met when planning a route using ground-based navigation aids.
1. Not more than 2 hours between positive fixes.
2. Distance from last positive fix to the destination not more than 6.39 times the rated coverage of the destination aid.

Looks like you've got it!


Bob
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Jase88 replied the topic: Revision Exercise 2.1, Q6, Page 103

Great thanks very much!
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