ILS Trainer Instructions
ILS Trainer concepts are as follows:
- Seetings page:
- Glide Path (º): usually 3º, you can set your desired angle of descent.
- Appr Alt Dif (ft): How many feet below your current altitude will the virtual TDZ be set.
- Appr. Dist. (nm): how many naoutical miles in front of your current position will the virtual TDZ be set.
- NOTE: The three values of Glide Path, Appr Alt dif and Appr. Dist are redundant. You set the virtual TDZ with only two of them, the third will be calculated acconrdingly.
- Interception Angle: angle of the approach course in relation with your current course. If you use 0, the approach course will be your current course. Interception angles of more than 90º will leave you flying away from the virtual TDZ.
- Start Point Side: the side of the approach you will be initially in (left or right).
- Lateral Offset(nm): how far (in nautical miles) from the approach course you want to start (for practicing course/CDI interception).
- Front offset: how far (in nauticam miles) from the glide slope at your current altitude you want to start (for practicing gkide slope interception).
- Touchdown Zone: the virtual TDZ generated as Start Point + Front Offset + Approach Distance.
- Decision Altitude: TDZ altitude + 200 feet (or current altitude - Approach Altitude Difference + 200 feet).
- If you use 0 interception angle, 0 lateral offset and 0 front offset, you will start the approach centered on the CDI and Glideslope with the approach course being your actual course.
- If you just want to intercept the glideslope (and not the CDI) then use 0 interception angle and 0 lateral offset.
- Label: Label for the Quick Button. We recomend to use the Airport and Runway for reference. Use first four characters for Airport (SCEL) and last 3 characters for runway (17L). The string will be separated at the fourth character for the Quick Button label. If you want to use 3 characters for Airport (LAX), leave a space after the 3rd character and then type the runway (for example: LAX 25L). This label is only a reference for the Quick Button, you can type what ever you want.
- Glide Path (º): set the desired glide path for the ILS.
- TDZ Lat (º): latitude of the Touch Down Zone in degrees, minutes, seconds and two decimal seconds (decimal degrees coming soon).
- TDZ Lon (º): same for longitude of the TDZ.
- TDZ Elev (ft): Touch Down Zone elevation. Needless to say... BE CAREFUL with this setting (also with th rest but with this one specially).
- Course (º True): ILS final course in degrees with 2 decimals. This has to be TRUE COURSE, see note below.
- Mag. Dev. (º): Magnetic deviation in degrees with 2 decimals.
NOTE for Course and Mag Dev
This app was designed for practicing on airports without real ILSs (even though you can recreate a real one if you don't have an ILS in your aircraft). Therefore, you will probably get the precise Runway Heading from the most useful tool for pilots available out there: Google Earth.
Well, from google earth you will get TRUE HEADING or TRUE COURSE, not magnetic values.
Then, if you go to your loved home base airport or your favorite friends airfield in Google Earth and measure (with the ruler tool) the runway heading... voila, that is the number you have to type in Course.
BUT, if you want ILS trainer to display the magnetic course and the magnetic heading (track really) on the HSI, then you can enter the magnetic deviation with positive values for East and negative values for West.
- Use always true course (not magnetic) for the Course setting of the fixed ILS
- Set the magnetic deviation if you want magnetic course and magnetic heading (track really) displayed on the HSI (highly recomended).
For example, lets supouse you come to visit Santiago de Chile, and you plan to make an ILS approach to SCEL, runway 17L:
- If you go to Google Earth, you will find that runway 17L's true heading is 177.43. If you just set 177.43 as the course in ILS trainer you WILL FLY the correct course but the HSI will show 177.43 as the course and heading (track).
- But if you make a real ILS aproach to SCEL 17L you will find that final course displayed in approcah plates is 174 (magnetic). So, if you want to simulate a real ILS you have to set the Mag. Dev. in ILS Trainer to 3.43, then, you WILL STILL FLY the correct course but now the HSI will show you a beautifull 174 course and a beautifull 174 heading (track).
- If you prefer to take the info from SCEL ILS aproach plates you will find that: final aprch crs is 174º, Mag Dev is 2.7º so, you have to type 176.7º as course (174 magnetic + 2.7E = 176.7º True) and you will be flying the 174 corse while the HSI shows the 174º course and heading.
Always remember that ILS Trainer will make no verificacion that the Decision Altitude (DA) is above ground level. You as the pilot have to ensure that the selected setings generates a DA safely above ground level and that there are no obstacles along the generated approach flight path.
If you have any questions or suggestions please refer to the support form and we will be glad to help you.