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IFD 540 holding pattern entry
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cpzjr View Drop Down
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Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cpzjr Quote  Post ReplyReply Direct Link To This Post Topic: IFD 540 holding pattern entry
    Posted: 02 Feb 2023 at 8:19pm
Set up an lpv approach and naving directly to the course reversal waypoint. 540 showed correctly a teardrop entry with hashed track path.  Approaching waypoint received an alert for parallel entry ( not correct entry) while still showing the hashed teardrop.  Aircraft continued past waypoint to do a parallel entry.  Had to go to heading mode to accomplish teardrop.  Aircraft would not nav the teardrop and gpss steering did not work until established on inbound.   Any similar scenarios?   Thanks, Phil
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rpostmo View Drop Down
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Points: 162 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rpostmo Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 2023 at 11:03am
Phil,
Not the same scenario using an autopilot,  but not uncommonly I find the depicted entry
to the holding patterns to be "wrong"  from the way I was taught and the way I want to do it.
Once you correct it manually, the algorithm figures it out and corrects itself......just like Google Maps
when you've made an  "alternate choice"  driving.
Bob
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Points: 139 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ricardo Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 2023 at 2:31pm
prob not important -- but the regs do not require a specific entry as long as you stay within the protected space.

so teardrop or parallel, both would be legal in the scenario.
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cpzjr View Drop Down
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Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cpzjr Quote  Post ReplyReply Direct Link To This Post Posted: 03 Feb 2023 at 5:38pm
Thanks for the info,I am aware of the idiosyncrasies of holding pattern entries but when the IFD draws a proper teardrop and the autopilot (STEC 3100) does not follow the pattern it is a little disconcerting. As stated, if this is an autopilot problem I will check with Stec.  Again, thanks for the input, Phil 
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Points: 1048 		Post Options Post Options   Thanks (0) Thanks(0)   Quote chflyer Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 2023 at 8:55am
It would be strange if the IFD is not providing the same track guidance to the a/p as the magenta line on the map, as long as you're in GPSS mode.
Vince
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cpzjr View Drop Down
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Points: 6 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cpzjr Quote  Post ReplyReply Direct Link To This Post Posted: 04 Feb 2023 at 10:41am
my thoughts exactly. Has happened twice before 
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