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IREX VOR

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Don replied the topic: IREX VOR

MDG end of the sector is 280 M. This is MDG track from, isn't it? (MDG radial)
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John.Heddles replied the topic: IREX VOR

MDG end of the sector is 280 M. This is MDG track from, isn't it? (MDG radial)

Yes, indeed. However, what we are interested in is what is the final track INTO Mudgee ?

Engineering specialist in aircraft performance and weight control.
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Don replied the topic: IREX VOR

Ok! Copied John.

Thank you!
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John.Heddles replied the topic: IREX VOR

.. and so, what is your final answer for the ADF bearing ?

(By the way, I notice Wings out West just south of Dubbo. If anyone is ever out that way, do drop in and say g'day to Dan Compton - lovely bloke - we used to work together when he was flying Super King Airs at RAAF 32SQN). While I've not flown with him, his persona suggests he would be an excellent instructor

Engineering specialist in aircraft performance and weight control.
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Don replied the topic: IREX VOR

352 R (my answer is correct, isn't it?)

I will definitely fly to Dubbo after this exam for sure. Wings out of West, looks nice country strip
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John.Heddles replied the topic: IREX VOR

352 R (my answer is correct, isn't it?)

I wouldn't have thought so.

At 0336,

(a) what is your heading ?

(b) what is the track to the station ?

If you do get out to Dubbo please do pass my fondest regards onto young Dan.

Engineering specialist in aircraft performance and weight control.
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Don replied the topic: IREX VOR

I think I am missing something in here.
At 0336

(a) 105 degrees M
(b) 97 degrees M
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John.Heddles replied the topic: IREX VOR

I think I am missing something in here

If my guess is right, what you missed is an intended subtlety in the question. With flying, the catchcry is "appropriate attention to detail".

At 0336

(a) 105 degrees M
- concur

(b) 97 degrees M - now, you told us earlier that the outbound RNC track from Mudgee was 280M. So, what might be the inbound track RNC to (and at) Mudgee ? The CA is 4° so what is the required track to Mudgee ? and what is the ADF relative bearing ?

(Caveat - for the exams we do tend to get into precision that is not there in the real world so, at the end of the day, your answer, from a practical point of view, is fine. For the exam, though, I would expect it to be marked incorrect.)

Engineering specialist in aircraft performance and weight control.
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Don replied the topic: IREX VOR

MDG radial 280
minus closing angle of 4 degrees is 276
Reciprocal of 276 is 96 degrees Magnetic
HAT trick
105 +/- A = 96
351 R is the answer :-) ?
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John.Heddles replied the topic: IREX VOR

351 R is the answer :-) ?

That answer appeals.

There are two common approaches to IFR work - the first is continual orientation to a mental picture of the map story (which is the way I think) - and the other is to do all these mental sums (which tend to fatigue me greatly and I go to sleep - which probably is not good ?).

I think it through this way -

(a) at 0336 I note that I must have been asleep not to have noticed what the VOR was trying to tell me and I am 2 dots right - so I have a TE of 4° right (which just happens to be the CA also) and need to turn to the left to fix that.

(b) inbound RNC track is 100M so the track I require is 096M (ie the CA gets figured in)

(c) present heading is 105M

(d) difference is 9° to the left of present heading

(e) so the needle should be pointing 9° left of the nose - ie 351R

Just about as difficult as I need it to be in the cockpit .....

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