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intercept greater than 90 degree ?

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intercept greater than 90 degree ?

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Old 28th Aug 2014, 10:12
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intercept greater than 90 degree ?

"outbound 330 , intercept inbound 050 "

how to intercept this ? which way to turn and how many degrees of intercept should i use ?

could someone please solve this for me ?
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Old 28th Aug 2014, 11:09
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In russia intercept vectors are not uncommonly more than 90 degrees. Luckily with modern efis aircraft with good "LNAV" it's very easy to do still, you just program the box and make sure your ground speed isn't to high and keep on sipping coffee.

On jurassic aircraft though, you need to be far away or use the NDB/VOR bearing needles to make out your relative bearing for a proper timing of the intercept turn.
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Old 28th Aug 2014, 12:23
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First, why would anyone do this?

Second, you always need to identify where you are and where you are going, so you must change an outbound to an inbound or vice versa.

do you have terrain information for being off airway if you truly intercepted, not on top of the navaid?

all of these exercises are sort of odd. but the easiest way is to draw a depiction

certainly moving map displays in the cockpit make it easier

and you can even imagine it on an old RMI


good luck
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Old 29th Aug 2014, 09:00
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Am I being thick? I don't understand the question because the angular difference is 80 degrees. Or did the author intend to write 150 degrees? i.e. a 180 about turn.
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Old 29th Aug 2014, 09:19
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Sounds like an exam question to me. I would turn left onto a heading of 080 (for a 30 degree intercept) or 095 (for a 45 degree intercept).
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Old 29th Aug 2014, 10:12
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If josh can find a piece of paper and a pencil in his 'cockpit' I recommend he draws a pretty picture when the answer will be obvious (Assuming he has enough fuel, of course.
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Old 29th Aug 2014, 10:42
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Just follow the magenta line...
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Old 29th Aug 2014, 11:28
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Devil Just follow the magenta line...

...IF the the little box is programmed properly - by a systems operator that understands its logic. Real pilots need not apply... Ouch!
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Old 29th Aug 2014, 19:44
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boys and girls we have to get to the common!

inbound outbound

inbound 050 degrees...that is the 230 bearing FROM

outbound 330 degrees is the 330 degrees from the station

so convert to something common unless you meant inbound on the 050 bearing FROM

sounds like you need a long meeting with a good CFII
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Old 29th Aug 2014, 20:02
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You need to be really clear about what you want. You say inbound 050. Do you mean R050 inbound or inbound course 050. Big difference!

In this situation you are on R330 and you want to intercept R050 inbound. If it is different let me know. Angular difference now is 80 degr so fly parallel in oposite direction. This wil be track 050. Time 2 mins then turn right for a 90 degr intercept so track 140. When within 30 degr of the radial make a 45 degr intercept so fly track 185 until established on the radial 050 inbound.

Always imagine with a view from above! Draw it on a piece of paper and it makes sense! The most important thing is that you have the right picture so know the difference is between R050 and R050 INBOUND. Makes a major difference!

Last edited by whitelabel; 29th Aug 2014 at 20:14.
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