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Altitude constraints

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jeffcb View Drop Down
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    Posted: 10 Jul 2018 at 6:40am
I am having trouble with altitude constraints in my IFD 540.
If an altitude constraint is entered for the first leg of an active flight plan, it shows on the map on the wrong side of the first waypoint. Either that or sometimes directly north of the first way point.

Secondly, if the active route is closed and then reopened, all the entered altitude constraints disappear.
Is this normal?

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Jeff
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AviSteve View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AviSteve Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2018 at 9:25am
Originally posted by jeffcb jeffcb wrote:

I am having trouble with altitude constraints in my IFD 540.
If an altitude constraint is entered for the first leg of an active flight plan, it shows on the map on the wrong side of the first waypoint. Either that or sometimes directly north of the first way point.

Secondly, if the active route is closed and then reopened, all the entered altitude constraints disappear.
Is this normal?

Regards
Jeff
The altitude constraint generally appears under the waypoint label on the map.  However, my guess is that you have an offset applied to the constraint.  In that case, the label will move to that point along the flight plan.  Look at the altitude constraint definition on the leg (FPL page) and make sure the "Cross" field has zero in it.  If the waypoint is an airport, the system will default to 5.0nm before the point.

When you say closed and reopened, I'm assuming you mean that you have defined a stored route and you activate it to make it your flight plan.  User entered constraints are retained in stored routes, but only for those legs that are not a part of a procedure - airway, departure, arrival, approach.
Steve Lindsley
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jeffcb Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jul 2018 at 11:09pm
Hi Steve,
Thanks for the reply.
I am entering an offset. eg cross 5 nm before xxx at or below 5000 feet.
What I am seeing is the point that is created on the magenta track line to show this constraint on the map, is being shown after the relevant waypoint, not before it. And sometimes it is not even on the track. As mentioned it is only on the first leg of the active flight plan that it happens.
This does not happen when a constraint is applied to subsequent legs of the flight plan.
It may not be relevant, but these flight plans were created in Ozrunways and sent to the Avidyne via the Avidyne WiFi network. I applied the altitude constraints to the flight plans in the Avidyne after it had received these flight plans.
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Jeff
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jeffcb Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2018 at 2:02am
Hi Steve,
Have done more testing.
This issue has nothing to do with Ozrunways.
When an altitude constraint is entered relating to the first waypoint after the origin waypoint, on the map it appears to place the constraint indicator North of the first waypoint by the same number of NM entered in the "cross" field.
My original confusion was caused because the leg of the flight plan I was using was running due North, so it appeared to enter the indicator after the waypoint.
Subsequent legs are OK.
Jeff

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Post Options Post Options   Thanks (0) Thanks(0)   Quote AviSteve Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2018 at 9:15am
Originally posted by jeffcb jeffcb wrote:

Hi Steve,
Have done more testing.
This issue has nothing to do with Ozrunways.
When an altitude constraint is entered relating to the first waypoint after the origin waypoint, on the map it appears to place the constraint indicator North of the first waypoint by the same number of NM entered in the "cross" field.
My original confusion was caused because the leg of the flight plan I was using was running due North, so it appeared to enter the indicator after the waypoint.
Subsequent legs are OK.
Jeff

So are we good?  I can't tell.  If not, posting a picture would be helpful.
Steve Lindsley
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jeffcb Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jul 2018 at 7:11am
Hi Steve,
Not sure where my last post went.
More testing seems indicate that this issue occurs on the active leg of the flight plan.
The altitude constraint indicator shows on the map page North of the relevant waypoint by about the same distance that is entered in the "cross" field on the FPL page.
If other users are not seeing this then I must be doing something very wrong.
Have photos but can't see how to post them on this forum.
Regards
Jeff
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MysticCobra Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jul 2018 at 8:23am
If you can't post a photo, can you post a step-by-step procedure for duplicating the problem?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AviSteve Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jul 2018 at 10:02am
Originally posted by jeffcb jeffcb wrote:

Have photos but can't see how to post them on this forum.
I posted instructions on how to include an image in a post.  See http://www.avidynelive.com/topic1560_post19292.html#19292



Edited by AviSteve - 12 Jul 2018 at 10:03am
Steve Lindsley
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AviSteve Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2018 at 9:07am
Posting relevant pictures for jeffcb...




Steve Lindsley
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AviSteve Quote  Post ReplyReply Direct Link To This Post Posted: 13 Jul 2018 at 9:09am
Definitely something I've not seen before.  Not that it's an excuse, but my guess is that it has to do with the fact that there is no GPS position.  I'll have a look in the software.
Steve Lindsley
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