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Welcome to the CPL Navigation question and answer forum. Please feel free to post your questions but more importantly also suggest answers for your forum colleagues. Bob himself or one of the other tutors will get to your question as soon as we can.
I am going through my cpl nav KDR and wanted to clarify a few things.
If asked for a track change when doing a 1 in 60 but they have only given you one distance off track, between 2 track distances, you just calculate the CA right?
Secondly, if given the degrees off track and time at point a (1200) and b (1220, b being the point off track), how can i calculate ETA and distance to C?
Lastly, when calculating Roc and rod, I'm getting confused with the corresponding nm steps to the LLs and discerning differences. Plus, I just want to make sure that to remain within CTA, I should +500ft, even if the question does not state it?
AAT Head of Operations replied the topic: Calculating track change
Firstly apologies I'm doing this from my phone.
Q1 without seeing an actual question, theb1:60 requires you to calculate Track error, which will then have you parallel your original track. Secondly the closing angle to regain track to destination.
Q2. Your off track and have been delayed to that point by 20 minutes. V=D/t so work out your ground speed or better still wind velocity if the question gives you this information. Then calculate your ETI from the off track point to the destination.
Q3. In real life yes you need to maintain +500 to the step. Question wise I would need examples to help. The questions love trickery in the wording.
Appreciate it. What I mean for question 1 is that they have provided 2 distances (D1 20m and D2 30nm) and only one position off track (i.e. 5nm). Do I just use this to calculate both te and CA or just ca?
For the second question, I'm asking moreso, if provided with an angle off track, rather than a distance, how to calculate time from this and create a distance from it.
