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Old 20th February 2001 | 22:17
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AffirmBrest
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Night Flying -

Same techniques for calculating drift etc. apply, just make sure you choose a fix that has got lights on it..

Have a good plan up your sleeve for engine problems, failing that, a parachute.

Take a torch!

Don't use coloured pens (esp red) on your maps.

When estimating position - everything that is illuminated at night looks closer than it actually is (inc. other aircraft)

If you don't know already, learn how to use a VOR/DME/ADF to navigate and fix your position (just in case...)

Know your MSA!

Day Flying -

Many of the above apply, ask your Instructor about the 1-in-60 rule and the 'Clock code' for estimating drift. 1-in-60 quite complicated to explain all the benefits here but the clock code...

TAS / 60, multiplied by the windspeed (kts) = 'Max Drift' in degrees.

If wind is 15deg off your nose (15deg = 15 minutes = QUARTER of an hour), actual drift is QUARTER of the MAX DRIFT

If wind is 40deg off your nose (40deg = 40 minutes = TWO-THIRDS of an hour), actual drift is TWO-THIRDS of the MAX DRIFT.

And so on, for 30deg, 45 deg, 50 deg and all others to a reasonable degree of approximation.

It works for Groundspeed too - just use angle off the beam (wingtip) and change that into minutes of a hour to get the Proportion of the Windspeed that you have as a H/W or T/W. Then work out the Groundspeed.

Confused? Ask your QFI, then try it - I found that thosae 2 rules are all I really need for reasonably accurate DR/VFR Nav

Have a good plan for if you get 'unsure of position' - ask your QFI to help you construct a 'checklist' and sellotape to your kneeboard

Have fun!

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...proceeding below Decision Height with CAUTION...

[This message has been edited by AffirmBrest (edited 20 February 2001).]