Requirements for HOLD

[FlyerC3]

Hi all

I wrote a small LUA script to fly a hold starting at any chosen point. As you can see in the picture, it already works quite well. I haven’t compensated for wind drift yet, therefore there still may be a shift. In my script, I specify the heading of the leg as well as its duration in seconds. I set the bank angle to 25 degrees. The speed is manually set to 215 knots, and I define whether the turn should be to the right or to the left. In principle I allow any reasonable altitude and of course altitude changes.

The picture also shows a defined hold nearby, which seems to have a different size. Less bank angle ? Higher velocity ?

So I would like to ask, what instructions does ATC issue when they clear an aircraft to hold ?

And, by the way, does someone know how to write with LUA directly into the FMC scratchpad without "typing" every character via the keyboard.

Thanks a lot  

Edited 10 hours ago by FlyerC3

[Litjan]

Nice work!

Normally ATC will clear you for "published holds" - or they give you holding instructions consisting of a fix, an inbound course and a timing (how long in flighttime the inbound leg should be).

[mjrhealth]

If your talking about xplane ATC who knows if it works, Had people say they get told to hold but never to exit

[FlyerC3]

 

Is there a fix entry point for the HOLD, i.e. as shown here always LETKU ? Or can I enter the ring any place convenient for my situation ?

And what about the turn radius, i.e. is it a venial sin to overshoot when speed is to high ?

And one more : I assume,the FIX is alway the begin or end of the leg ?

 

Edited 7 hours ago by FlyerC3

[Litjan]

https://skybrary.aero/articles/holding-pattern