This page was last updated on 11 February, 2021.
The UK Landouts Database is an attempt by David Taylor and Martin Gregorie to provide information about glider landout fields in the UK in a form that can be loaded into navigation instruments for reference during a flight and where it can be automatically overlaid onto a moving map display.
Cambridge Gliding Club maintains the CGC Field Book which provides a subset of the information in the UK landouts database. It is organised and maintained the same way as the main database, though its update frequency is different. You can either download and use the UK landouts database or the CGC Field Book but there is no point in using both.
The current release supports current versions of:
The long term intention is to extend support to other navigation instruments as and when this is asked for and we are supplied with the file formats these instruments use. When this happens we will change the distribution method to make it rather more like TPSelect: the conversion tool will be made available along with the master file so pilots can generate the files their navigation instruments require. In the mean time we are publishing end-user files as described below.
The database is maintained as a set of master files, each containing data from a separate source. There is one entry for each landout field which contains everything we know about that particular field. The master files use the OpenField format, which has been specified to hold data about landout fields in a format that is independent of the navigation devices used to display it during flight. Device-specific files are created by running the master files through a Java program, OpenField, that generates files for a nominated navigation device. The generated data falls into three types of file:
|BGA Turnpoints list||This file is input to OpenField to allow the program to determine whether a landout is a recognised BGA turnpoint or not. It does not generally include airfields, so the only landouts in it are turnpoints that happen to be on or very near to airfields. This means that almost all of them are associated with gliding club fields. You can use either the Winpilot (CAI) or SeeYou (CUP) file format with LK8000 and XCSoar. However, you must use the correct descriptions file for the turnpoint format you've chosen because CUP and DAT files use different name formats. The descriptions file has to use the same name format as the turnpoint and landout locations files for the description to be found and displayed by your navigation device.|
|Landout locations||This file contains GPS co-ordinates for airfields and other suitable landout fields that are not included in the BGA Turnpoints list. It must be in the same format as your BGA turnpoints file.|
This file contains a free format description for each of the known landout fields that appear in either list. Each description is linked to location data in one of the other files by the name of the turnpoint, airfield or landout field, so the names must be an exact match in spelling, use of punctuation and capitalisation.
If you're using SeeYou (CUP) format files, this information is also included in the CUP format landout locations file, so you don't need the landout descriptions file. However, if you're using LK8000 or XCSoar you may choose to use the description file because it is shown in a bigger display area and so is usually easier to read.
The file uses a format defined by the authors of XCSoar and LK8000 and is not guaranteed to be useful with any other navigation program or device.
There should be no adverse interaction with later revisions to the BGA turnpoints file, but note that:
The Winpilot (DAT) version was designed for LK8000 and XCSoar, but should also work with any navigation device that can use Winpilot (DAT) turnpoint files. The SeeYou (CUP) format version should be usable with any navigation device that can use CUP format turnpoint files. Download the files you need from XCSoar and LK8000 data sources. You should have:
Files 1 and 2 should have the same date and timestamp. Preferably, file 3 should not be more recent than the other two files; see the Caveats given above for the reasons for this statement, However, as the landout fields affected by this are probably gliding sites, their landout descriptions will cover details of local landing patterns and areas that should not be overflown. The fact that this turnpoint is landable should be obvious if you look out the window.
This is needed if you choose to download the static fileset. It involves tagging the main turnpoint on your home field as the XCSoar and LK8000 'HOME' field. As downloaded, this is set to GRL (Gransden Lodge). The steps to change this are:
[turnpoint=HOME]after the last line in the file and follow it with a blank line. turnpoint is, of course, the name of your chosen turnpoint copied exactly as it is written in the BGA turnpoint file.
Copy all three files into the appropriate directory in your navigation instrument. If you're running XCSoar they should go into XCSoarData and if you're running LK8000 they go in LK8000\_Waypoints. Now start the program in Simulate mode and go into page one of Setup System. Configure the files as shown:
|File type||Winpilot (CAI) file name||SeeYou (CUP) file name||XCSoar box||LK8000 box|
|BGA turnpoints||bga_20nnx.dat||bga_20nnx.cup||Waypoints||Waypoints 1|
|Landout locations||cgc_field_book.dat or uk_landouts.dat||cgc_field_book.cup or uk_landouts.cup||More waypoints||Waypoints 2|
|Landout field description||cgc_field_book.txt or uk_landouts.txt||cgc_field_bookCUP.txt or uk_landoutsCUP.txt||Waypoint details||Waypoint notes|
After restarting your program, you should now see landout fields appear in the map display. When you look at their details, either by clicking on them or via the turnpoint selection page, you should be able to see all the information recorded against them as well as the description, which lists radio frequencies, if available, runway directions and dimensions as well as warnings about obstructions and mandatory approach details.
If you set your HOME airfield and started the program in Simulate mode, your home airfield should be under the glider symbol on the map.
Install the landout locations file as the second waypoints file.