turn dct wpt

AidenCook

controllers sometimes use cancel hold, right turn direct LAM and leave LAM heading 265. the only way we can currently execute this in lc is if the aircraft is closer on the right than on the left side to the waypoint. so suggestion: we could have the turn directions apply to directs.

CloggyUk

AidenCook Hello

LAM hold is a left hand hold. They’ll never use turn right to LAM as it is the wrong way round. I know what you mean regarding cutting the hold short and terminology in real life. As the turns in a hold are rate 1 turns, they will be the same as a normal turn. I think that if you say to an aircraft on the outbound leg ‘cancel hold’ and turn LEFT hdg 265 it will pass over LAM. The wind might make it drift a little. Next time I run LC I’ll test it myself!
I do understand your suggestion. But as far as I remember, in the UK we can only specify turns when issuing a Heading, not when issuing a DCT or Resume Own Nav to ‘waypoint’. This is to take out any ambiguity or incorrect programming of FMS by flight crews.

Cheers, C

AidenCook

CloggyUk i dont know about other sectors, but intn and ints definitely use "turn left back to LAM" or "turn left direct LAM" and then they would specify a leave heading. thanks

CloggyUk

Yes, left, but not right 😉

CloggyUk

Hi all

I have done some testing on LL INT N&S. Ran bandboxed INTN/INTS/FIN at low traffic rate. This generated some traffic, but not really anything conflicting.
Here are what happens after assuming the traffic.
1) When you press the 'H' shortcut button, enter a value (ie 265 for LAM) with keyboard and press 'enter' the system allocates a L265 in the label. The fix LAM will remain in the list and the flight remains in the HOLD panel/list. On passing LAM the label changes to H265 and the HOLD gets cancelled, it disappears from the HOLD list and LAM disappears from the list of fixes and only EGLL remains. This happens when traffic is approaching the Hold Fix or is in the Holding pattern. If in the holding pattern, it will complete the pattern.
2) When you open the combined menu by clicking the label using mouse and click on a heading, this heading is immediately assigned in the label, flight disappears from the HOLD list (so hold gets cancelled), hold FIX remains in the list. On passing the FIX, it disappears from the HOLD list. This happens approaching the Hold Fix or when in the Holding Pattern. The aircraft will turn the shortest way, unless a turn direction is specified.
3) If the aircraft is in the holding pattern: When you open combined menu and press 'Cancel Hold', the aircraft resumes its own Nav. It removes the FIX from the fix list and starts to turn immediately to the next fix on the programmed route, making the shortest turn. As the fixes for the approach tracks are hidden (except RNAV fixes), you don't really know where the aircraft is routing to. So you will have to allocate a Heading to resume positive control of the flight.

Anytime a flight disappears from the HOLD list, the Automatic Controlled previous sector will be able to allocate the level again. In general laddering the stack can be tricky and requires timing when allocating levels and cancelling holds.

I hope this is of benefit to all.

Happy controlling everyone, C