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q3082 compass heading
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Q3082  resurrected!  where's the catch??
Q3080 true course 300?, drift 8?R, variation 10?W, deviation 4?. Calculate the compass heading.
(a) 306?
(b) 322?
(c) 294?
(d) 278?
Calculation: True course: 300?T + Variation: 10?W = 310?M  Deviation: 4? = Compass Heading: 306?
Correct
Q3081 true track 352?, variation 11?W, deviation 5?, drift drift 10?R. Calculate the compass heading.
(a) 358?
(b) 025?
(c) 346?
(d) 018?
Calculation: True course: 352?T + Variation: 11?W = 3?M  Deviation: 5? = Compass Heading: 358?
Correct
Q3082 true track 070?, variation 30?W, deviation +1?, drift drift 10?R. Calculate the compass heading.
(a) 089?
(b) 101?
(c) 100?
(d) 091?
Calculation: True course: 070?T + Variation: 30?W = 100?M + Deviation: 1? = Compass Heading: 101?
Wrong! (...answer stated as 089??)
Ideas anyone???
FWExBGS student, fATPL, DCFI(A) Atlantic Flight Training, Coventry

Originally posted by FlyingWolf[I]Q3080
Calculation: True course: 070?T + Variation: 30?W = 100?M + Deviation: 1? = Compass Heading: 101?
Wrong! (...answer stated as 089??)
Ideas anyone???
FW
89  +1  90  30W  70
The 10 degree drift has to be taken into account
Remember drift goes from heading to track so 10 degrees starboard drift would make heading 100 so going the other way it has to be subtracted, same as the deviation, even though it s +1 when you move right to left it must be subtracted, hope that makes sense.Last edited by mcgoo; 12012007, 19:10.
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Cheers McGoo  sorted I think.
Drift WAS factored in after all.
Track and course seem to get treated the same on the QB (not sure I've ever differentiated between the two), but is different to Heading (ie after drift or WCA has been factored in). If I look at my VFR flight log, I've got three 'directions'  True Track, True Heading and Magnetic Heading, and that's enough for me. Anything else (eg, course, trackmadegood, etc) just seems superfluous to me and is cluttering up much needed brain space.
A useful exercise on two counts:
(1) I've realised after all this time that I've been treating Variation and Deviation the same, ie adding West and subtracting East for both. Probably doesn't help that we fly magnetic, not compass, headings.
(2) by some spooky coincidence you can ignore drift in these sorts of calculations, get deviation the wrong way round, and STILL get the answer right  the first two Qs above prove it!!!
Thanks again for your input mate
FWLast edited by FlyingWolf; 12012007, 21:21.ExBGS student, fATPL, DCFI(A) Atlantic Flight Training, Coventry
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Originally posted by FlyingWolf View PostQ3082  resurrected!  where's the catch??
Q3080 true course 300?, drift 8?R, variation 10?W, deviation 4?. Calculate the compass heading.
(a) 306?
(b) 322?
(c) 294?
(d) 278?
Calculation: True course: 300?T + Variation: 10?W = 310?M  Deviation: 4? = Compass Heading: 306?
Correct
Q3081 true track 352?, variation 11?W, deviation 5?, drift drift 10?R. Calculate the compass heading.
(a) 358?
(b) 025?
(c) 346?
(d) 018?
Calculation: True course: 352?T + Variation: 11?W = 3?M  Deviation: 5? = Compass Heading: 358?
Correct
Q3082 true track 070?, variation 30?W, deviation +1?, drift drift 10?R. Calculate the compass heading.
(a) 089?
(b) 101?
(c) 100?
(d) 091?
Calculation: True course: 070?T + Variation: 30?W = 100?M + Deviation: 1? = Compass Heading: 101?
Wrong! (...answer stated as 089??)
Ideas anyone???
FW
Actually the signs doesnt matter.It matters only for the direction. East + and West 
So whenever there's deviation ( sign given) take it as West but dont really subtract, same for East which is +.
You can just add and subtract based on these terms given below:
Variation East  Magnetic Least
Variation West  Magnetic Best
Deviation East  Compass Least
Deviation West  Compass Best
Also please check out the link.Hope that helps you😀
https://www.theairlinepilots.com/for...opic.php?t=677Last edited by piouspilot; 28032019, 08:28.
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Greetings,
Someone please help me with this Question.
What is the Compass heading if true track is 358 drift is 17 Left , variation is 27 E and deviation is 19 W?
a) 009
b) 001
c) 359
d) 347
Answer: 001 (b)
But when i do it,
Track (T) 358
Drift. 17 P
Hdg = 015
T. V. M. D. C
015. 27E. 12. 19W. 031
So I got 031 ....😢
Please do Help...
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