Does anyone know how to make coordinates for FPL?

Does anyone know how to make a coordinates sometimes i see people like @Dr3ambigg3r use coordinates?

Hey there!

Have a look at the tutorials below:

Will they bee smooth is basically what Im asking

wdym by “smooth”.

You ever try @KSATplane_spotter
https://if-flightplan-tools.vercel.app/editor
I use that mixed with hand flying. Lmk if you need orbit tracks as well.

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SimBrief to IF

Let’s say I have these coordinates generated by SimBrief.

That would mean

Airway Waypoint Latitude Longitude IF Format
ASMAP4U FM078 40°48.6’N 029°16.3’E or 29°16.3’E 4048N/2916E
ASMAP4U PEPAK 40°41.8’N 029°19.3’E or 29°19.3’E 4041N/2919E
ASMAP4U NENVI 40°35.2’N 029°25.5’E or 29°25.5’E 4035N/2925E
ASMAP4U IBSIN 40°36.7’N 029°41.2’E or 29°41.2’E 4036N/2941E
ASMAP4U LECKI 40°37.7’N 029°52.4’E or 29°52.4’E 4037N/2952E
ASMAP4U VICEN 40°39.9’N 030°18.1’E or 30°18.1’E 4039N/3018E

OK so here’s the catch:

  • Both IF and SimBrief use the earlier definition of 1NM, and they’re using Degrees Minutes Decimal format

Earth surface is assumed as a perfect circle, so it would have 360° angle in total, and each 1° can be divided to 60 minute, and 1 minute is considered as 1NM

  • With that in mind, 40°48.6’N 29°16.3’E is 16.3NM away from 40°48.6’N 29°00.0’E
  • The thing is, IF format only specifies to minute detail, not the minute decimal, so 4048N/2916E actually represents 40°48.0’N 29°16.0’E. That’s 0.6NM offset to the south and 0.3NM offset to the west.
  • I haven’t found a way to input the minute decimal manually. You have to use IF FlightPlan Tools for this.

Google Maps to IF #1

Another exercise. Let’s say I want to input this random coordinate from Google Maps into IF

The coordinate is in Degrees Decimal format, so first thing we need to do is converting the decimal into minutes.

18.690925° = 18° + 0.690925° × 60’N = 18°41.455’N → 1841N (IF format)
110.054058° = 110° + 0.054058° × 60’E = 110°03.24348’E → 11003E (IF format)

Together it will be 1841N/11003E—offset 0.455NM latitude and 0.24348NM longitude, with Pythagorean theorem, it's offset 0.516NM from what it should be. The thing is they differ North/South and East/West by the positive/negative sign.

Google Maps to IF #2

Another exercise. Let’s say I have another random coordinate. Well, actually it’s not that random. It’s the threshold of RWY30 at KIAD.

The coordinate is in Degrees Minutes Seconds format. Things just get easier now. We need to do little to no conversion since it’s already in Degrees Minutes, but here is for the curious minds

38°56’01.8’‘N = 38°56’ + 01.8 × (1 min/60 sec) = 38°56’ + 0.03’ N = 38°56.03’N → 3856N
77°27’23.9’‘W = 77°27’ + 23.9 × (1 min/60 sec) = 77°27’ + 0.3983’ W = 77°27.3983W → 7727W

Together it will be 3856N/7727W—offset 0.03NM latitude and 0.3983NM longitude, with Pythagorean theorem, it’s offset 0.399NM from what it should be. It might look like a little number but if you input that into IF, you’ll see that it makes quite a difference when you view it from a closer distance.

TL;DR

Know your format and convert it to Degrees Minutes for it to work in IF.

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