IXEG HOLD: The community is still active

The Boeing 737 Classic is a nice aircraft. Unfortunately, like many, its not yet finished. 

This is the introduction to the description of the utilities that is going to add what the developers didn’t.

If you roll back the months, IXEG was one of the most hiping products once it was released. But after many years of development and moderate teasing it wasn’t a complete simulation.

Although a lot of users complained about the missing wingflex, some others recognized a major lack in a feature that should be a basic one in a custom FMS: the hold feature.

Luckily the community is still active and TonyVier developed a plug-in capable of implement the hold feature.

It basically works like the HOLD page on the IXEG 737 should, but it’s an external plug-in that might be triggered when you are higher on the vertical path or you simply have to hold for different reasons.

Here’s, as always, the ist of features:

PPOS
PPOS is a hold pattern at present position, a simplified version of the PPOS of a Boeing FMS. Enter the desired inbound course, leg lenght, speed and altitude, and click HOLD.
The aircraft will enter a holding pattern and will adjust speed and altitude. When the hold is active, you can adjust speed and altitude if needed, the program will anticipate the changes.
There is no luxury option like in the real aircraft to enter quadrants and arm an exit. If you are cleared to leave the holding, to have to find the best position to leave the pattern and continue with LNAV / VNAV. The PPOS hold is terminated when you click the button, or when you deselect HDG SEL. The program anticipates wind, but with strong winds the pattern will start to look pear shaped, because turn radius will be influenced by wind. Other factors that will influence the hold pattern are speed and altitude. A speed of about 220kn is quite good for a holding. The bank angle the program uses is 30deg. If you change the bank angle during the hold, the program will adapt. Small bank angles will create a large pattern however. If you choose a inbound course that is very much different from the course the pattern will look a bit odd in the beginning. Best is to choose a course with as much upwind as possible.
“HOLDING AT”
This will allow you to search for navaid in your area, and use this as the FIX for the holding pattern. If you have the navigraph files (you dont need them for this option), an attempt is made to link a hold record with the navaid you chose. Beware to check the result of your search, especially the distance, this may give an idea if you found the right one. Some searches may find navaids very far from your location. HOLDING AT searches for waypoints,VOR and NDB navaids, near you. When you are satisfied with your choice, click hold, and the aircraft flies to the FIX and enters the pattern according the general rules. This may look a bit strange at first, but its just a teardrop or parallel entry. It can do nice teardrops
“FIND HOLDING”
This uses the Navigraph data to find a HOLDING, and tries to link this to a way point or navaid. This works well in general, especially if you use the Navigraph (moving) maps / charts with it. Otherwise it works as HOLDING AT, some data from HOLD records may be added for you to accept or override. Some holdings you can find by their name, and some by their FIX name. Beware, the searches may find results thousands of miles form your location. And yes, it will try to fly there
I find it difficult to combine the different HOLD and NAV data and some results are odd. You may find matching data, that shouldn’t match, or data that should match, but doesn’t. But maybe I didnt see the light yet…
The program is beta. That means that it is rough around the edges, and may contain bugs I am not yet aware of. But, after flying a few hours, I think its doing a descent job of HOLDING, and finding the NAVAIDS to HOLD on. But you have to think a bit with it.

You can download this fantastic resource here and also leave a review/donation.


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