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DC_Ed

PDCS freezing

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Hi all. I've noticed this a few times; it's not too much of a bother because, eventually, it unfreezes but I wanted to know what causes the "freeze-up". It usually happens on ground or somewhere in the climb, the PDCS goes to the GA page and it doesn't respond to any input nor the selector mode. Some time into the flight it comes to life again. Any ideas?


Ed Ocampo
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Hi all. I've noticed this a few times; it's not too much of a bother because, eventually, it unfreezes but I wanted to know what causes the "freeze-up". It usually happens on ground or somewhere in the climb, the PDCS goes to the GA page and it doesn't respond to any input nor the selector mode. Some time into the flight it comes to life again. Any ideas?
I've never seen this one before. Sounds like Go-Around mode is being triggered inadvertently. If you have a button assigned to the TOGA function, you might check that it's not giving uncommanded inputs.

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I've never seen this one before. Sounds like Go-Around mode is being triggered inadvertently. If you have a button assigned to the TOGA function, you might check that it's not giving uncommanded inputs.
Now that you mention GA mode, what is the correct way to set up the Flight Director for takeoff? I haven't found a TOGA button per se, so I click the GA icon for the FD to give me runway heading and nose up indications. Maybe this very same action is the one causing the PDCS freeze-up?

Ed Ocampo
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eocampo@avsim.com

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Fly DC Jets

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Now that you mention GA mode, what is the correct way to set up the Flight Director for takeoff? I haven't found a TOGA button per se, so I click the GA icon for the FD to give me runway heading and nose up indications. Maybe this very same action is the one causing the PDCS freeze-up?
OK, it sounds like you're doing it to yourself then...the GA mode in the 'mouse isn't really takeoff and go-around, it's go-around only. There is a provision to program a button in FSUIPC for GA mode. While in GA mode, the PDCS is locked to the GA page. The correct way to set up for takeoff is to set the heading bug to runway hdg manually, and set a climb angle (SP-77) or engage a vertical mode after takeoff (SP-177).

Bob Scott | AVSIM Forums Administrator | AVSIM Board of Directors
ATP Gulfstream II-III-IV-V

System: i9-10900K @ 5.2GHz on custom water loop, ASUS Maximus XII Hero, 32GB GSkill 3600MHz CAS15, EVGA RTX3090 XC3 Ultra
Samsung 55" JS8500 4K TV@30Hz,
3x NVME 2x SATA Samsung SSD, EVGA 1KW PSU, 1Gbps internet
SoundBlaster XFi Titanium, TOSLINK to Yamaha RX-V467 HT Rcvr, Polk/Klipsch 6" bookshelf spkrs, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensors, Coolermaster HAF932 case, Stream Deck XL button box

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OK, it sounds like you're doing it to yourself then...the GA mode in the 'mouse isn't really takeoff and go-around, it's go-around only. There is a provision to program a button in FSUIPC for GA mode. While in GA mode, the PDCS is locked to the GA page. The correct way to set up for takeoff is to set the heading bug to runway hdg manually, and set a climb angle (SP-77) or engage a vertical mode after takeoff (SP-177).
OK, thanks! I'll try it the way you said.

Ed Ocampo
Staff Reviewer
AVSIM Online
eocampo@avsim.com

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Fly DC Jets

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