Dual ARS to replace blind turn coordinator? :) |
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jimmyz80
Groupie Joined: 24 Jul 2016 Location: Folsom, CA Status: Offline Points: 99 |
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Posted: 22 Jul 2021 at 4:54am |
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Our older Cirrus planes which are the initial target market for Vantage, have an old school turn coordinator gyro hidden behind the panel for the DFC90 to use as a secondary reference. Is there any chance with Vantage having dual ARS, you can complete certification with the DFC90 referencing those as two separate sources, and eliminating the gyro? It'd be nice to save a few pounds and eliminate a common source of problems.
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2006 Cirrus SR22 - IFD540 IFD440 DFC90 AXP322 MLB100
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AviSteve
Admin Group Joined: 12 Feb 2018 Location: Melbourne, FL Status: Offline Points: 2243 |
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It is my understanding that the turn coordinator comparator is not used in the DFC STC anymore.
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Steve Lindsley
Avidyne Engineering |
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D-EACY
Groupie Joined: 29 Dec 2018 Location: Munich Status: Offline Points: 96 |
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THAT would be really great and another good reason for the upgrade
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2006 SR22-G2 DFC90 IFD440
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Aerochip
Groupie Joined: 24 Sep 2019 Location: Utah Status: Offline Points: 46 |
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Can you clarify this? Could an existing DFC90 install in a Cirrus now remove the TC and how would that be accomplished, i.e. through a software change or ??
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D-EACY
Groupie Joined: 29 Dec 2018 Location: Munich Status: Offline Points: 96 |
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I understand that the second AHRS in the MFD replaces the TC in this respect.
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2006 SR22-G2 DFC90 IFD440
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AviSteve
Admin Group Joined: 12 Feb 2018 Location: Melbourne, FL Status: Offline Points: 2243 |
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Yes, you would need the latest DFC90 software.
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Steve Lindsley
Avidyne Engineering |
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Aerochip
Groupie Joined: 24 Sep 2019 Location: Utah Status: Offline Points: 46 |
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Super. Will remember this when the TC inevitably dies!
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gremlin
Groupie Joined: 23 Jun 2021 Location: Pacific NorthWe Status: Offline Points: 48 |
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What is the latest DFC 90 software version, we just purchased ours in March and it was installed at our annual in April and the shop that did it kept the TC in there as well Looking at the PFD I can see the DFC90 Top Level Part Number as 510-00874-000_REV03
What would one need to do to get it updated?
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AviSteve
Admin Group Joined: 12 Feb 2018 Location: Melbourne, FL Status: Offline Points: 2243 |
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Latest version was from 4/10/2014. I don't have the part number handy, but I just happen to have the checksum for that version - 0x69CEC547 (which I'm sure makes me a real geek...). You can check that on the PFD maintenance page. If you need to update it, I'd first start with tech support.
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Steve Lindsley
Avidyne Engineering |
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gremlin
Groupie Joined: 23 Jun 2021 Location: Pacific NorthWe Status: Offline Points: 48 |
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Okay lookes like I have that version, I see "DFC90 Application: 0x69cec547"
So I wonder why my installer thought I needed the TC kept in the plane. Does it do anythin gif it's still there?
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AviSteve
Admin Group Joined: 12 Feb 2018 Location: Melbourne, FL Status: Offline Points: 2243 |
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It won't hurt anything, but the DFC90 won't use it.
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Steve Lindsley
Avidyne Engineering |
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jimmyz80
Groupie Joined: 24 Jul 2016 Location: Folsom, CA Status: Offline Points: 99 |
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From a response I found in another thread, the SB apparently only allows for the removal of the TC from planes that came equipped with STEC-30 or STEC-50 APs, but the majority of us whose planes came with the STEC-55X need to keep the TC.
I haven't seen the actual text, so maybe AviSteve can help verify this is true. If so, it's a bummer and I still hope Vantage will finally ditch the TC. :)
Edited by jimmyz80 - 30 Jul 2021 at 3:39am |
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2006 Cirrus SR22 - IFD540 IFD440 DFC90 AXP322 MLB100
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gremlin
Groupie Joined: 23 Jun 2021 Location: Pacific NorthWe Status: Offline Points: 48 |
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Yup I had the STEC-55x so that's why the isntaller didn't remove it, if there's something that shows it isn't being used and could be removed that'd be cool to have. Not a fan of keeping gear in the plane that's not being used
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jimmyz80
Groupie Joined: 24 Jul 2016 Location: Folsom, CA Status: Offline Points: 99 |
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I can't hear you over the sound of "GYRO MISCOMPARE". I want so badly to toss that thing out...
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2006 Cirrus SR22 - IFD540 IFD440 DFC90 AXP322 MLB100
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ansond
Senior Member Joined: 12 Nov 2009 Location: Austin, Texas Status: Offline Points: 150 |
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Hey @AviSteve... I am wondering if my DFC90 needs to be updated.. here is my checksum values:
I am an (excited!!) Vantage deposit holder... will my DFC90 automatically get an update when we do the Vantage install (hence I just wait for that...everything is working great atm...)? Thanks for any guidance you can provide! Doug Anson N208LG
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AviSteve
Admin Group Joined: 12 Feb 2018 Location: Melbourne, FL Status: Offline Points: 2243 |
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Thanks for being an excited Vantage customer! We're making great progress on getting that finished up. While there is a later software version for your DFC90, there are no functional changes in that release. So, your autopilot will not require an update when Vantage comes along.
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Steve Lindsley
Avidyne Engineering |
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carman3
Newbie Joined: 10 Nov 2021 Location: KLOU Status: Offline Points: 1 |
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Following up on this topic. During testing today, it seems this is mostly correct. The DFC90 did not have any issues performing a ground test with the blind turn coordinator disabled. The PFD did however display "TC Fail" on the top right.
Can we confirm Vantage will display no such messages or if there is a future version of PFD software it will not display this message since the DFC90 no longer uses the TC? Edited by carman3 - 16 Aug 2023 at 12:05pm |
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AviSteve
Admin Group Joined: 12 Feb 2018 Location: Melbourne, FL Status: Offline Points: 2243 |
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Correction: If your DFC90 supports a no-TC configuration, Vantage will not show the TC Fail message. If your DFC90 still expects a TC, then the message could appear. In that case, you really should get the software update to the DFC90. Edited by AviSteve - 18 Aug 2023 at 9:22am |
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Steve Lindsley
Avidyne Engineering |
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ansond
Senior Member Joined: 12 Nov 2009 Location: Austin, Texas Status: Offline Points: 150 |
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@AviSteve... do you happen to know if that software update (for the DFC90) will be part of my vantage update? Thanks!! Doug
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AviSteve
Admin Group Joined: 12 Feb 2018 Location: Melbourne, FL Status: Offline Points: 2243 |
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Not that I'm aware of, but it's probably best to talk to someone on the sales team.
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Steve Lindsley
Avidyne Engineering |
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gremlin
Groupie Joined: 23 Jun 2021 Location: Pacific NorthWe Status: Offline Points: 48 |
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From the checksums given my DFC90 is supposed to be the latest software, how did you disconnect the TC for the test? If it's straight forward I could give it a try and see what mine does.
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ansond
Senior Member Joined: 12 Nov 2009 Location: Austin, Texas Status: Offline Points: 150 |
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You should be able to just pull the T/C circuit breaker...
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