ADAHRS Fail

[SkippyDiesel]

I keep telling you, I am very new to this technology, having just graduated from steam gauges. This coupled with not being in the first flush of youth and the need to partially dismantle my panel, to gain access to the back of the Dynon Skyview, all combines to being a very slow learner/reluctant to go somewhere that Dynon hasn't asked for.

I hope you can be patent.

I guarantee the next time it fails, I will endeavour to do the down load before the data disappears.

 

[airguy]

When something goes wrong with Skyview your FIRST reaction, always, in all cases, should be to download the diagnostic file. It takes about 5 minutes and costs you nothing but the time to do so. 9 times out of 10, sending that file to Dynon will get you an explanation of exactly what failed and how to fix it, even if that does require digging into the hardware. This is covered in the user manual.

 

[swatson999]

When something goes wrong with Skyview your FIRST reaction, always, in all cases, should be to download the diagnostic file. It takes about 5 minutes and costs you nothing but the time to do so. 9 times out of 10, sending that file to Dynon will get you an explanation of exactly what failed and how to fix it, even if that does require digging into the hardware. This is covered in the user manual.

User manual? USER MANUAL? Now you're expecting him to read the manuals? /s

 

[SkippyDiesel]

Update;

Tried every suggestion, so far no cause, no remedy.
Sent Diagnostic File to Dynon, three weeks ago - no response. So much for that!
To end on a good note - so far the ADAHRS problem has not recurred.

 

[SkippyDiesel]

Saga continues.

AHAHRS continues to fail, always on ground, at first pre start activity of the day. About 3- 6Hrs (Hobs) between failures.

I now do a "Forced Load", followed by shutting the whole system down for a few minutes. When I turn back on, ADAHRS comes back and functions as normal.

A second diagnostic file, to Dynon, USA, has not revealed any anomalies.

Latest strategy: Dynon is sending a Loaner SE SV/D600, in an attempt to isolate the problem.

Living in hope

 

[SkippyDiesel]

• Loaner SV installed - same ADAHRS Fail result.
• Swopped installed cable, for supplied Test Cable. No change.
• Now "Forced Load" only gets the system to run normally for up to about 15 minutes, before Failing again.

Have been trying to get the system up and running for so long, Earth X 900 battery has gone flat - now charging.

What else can I try???

 

[swatson999]

Once again, did you download the diagnostic file and data logs? Did you send the diagnostic file to Dynon? Have you looked through the data logs, and can you provide them (Savvy Analysis is a good tool...do you use it?)?

How many ADAHRS units have you plugged in and seen the same failure now? 3? 4? How many times are you going to go through the same process before it sinks in that the failure is *NOT IN THE ADAHRS UNIT*? Something ELSE in your system is failing (and perhaps taking out the ADAHRS unit when it does). Did you check voltages on the cable as Dynon asked you to do? What did you read?

What cables are running next to the ADAHRS network cable? Are there any portions where you have, say, high power lines (like to strobes) running alongside the cable to the ADAHRS?

What has Dynon said about the diagnostic file you sent them previously?

 

[jakej]

• Loaner SV installed - same ADAHRS Fail result.
• Swopped installed cable, for supplied Test Cable. No change.
• Now "Forced Load" only gets the system to run normally for up to about 15 minutes, before Failing again.

Have been trying to get the system up and running for so long, Earth X 900 battery has gone flat - now charging.

What else can I try???

Time for a reset -
Are you still using the home made Pitot/AOA ?
IMO, & I’ve done many installs, the issue is with your installation regardless of any troubleshooting you’ve had done.
Have someone else sort it out properly AFTER a genuine Dynon heated/unheated Pitot is installed.
PM me with your contact details or email/text me (I’m OS at the moment) there are guys in Oz who can give those.

 

[SkippyDiesel]

Once again, did you download the diagnostic file and data logs? Did you send the diagnostic file to Dynon? Yes

Have you looked through the data logs, and can you provide them (Savvy Analysis is a good tool...do you use it?)? No to all of this. Dynon in Australia & in the USA advised/guided all my actions & impact on the system - to date they have no explanation. I do not presume to be sufficiently computer savvy to attempt to diagnose this problem, hence my complete reliance on Dynon.

How many ADAHRS units have you plugged in and seen the same failure now? 3? 4? How many times are you going to go through the same process before it sinks in that the failure is *NOT IN THE ADAHRS UNIT*? The tone of this paragraph is bordering on insulting - I suggest you advise Dynon of your opinion - I am just following instructions.

Something ELSE in your system is failing (and perhaps taking out the ADAHRS unit when it does). Did you check voltages on the cable as Dynon asked you to do? I have no recollection of Dynon asking for this information. I presume the diagnostic down load would have included power supply condition report. What did you read? No such readings have been requested or made. As far as I am concerned the 12v supply to all of my instruments is good - there has been no failures of other systems (communications, constant speed prop, EFB, GPS or EMS module).

What do you know of Dynon's instructions to me ? - it would seem you have insights into my problem that Dynon lack.

The only other electrical system failure I have had (about 160 hrs) was with the Ducati voltage regulator. The the VR has been replaced. Both failure & replacement was communicated to Dynon - they did not think there was any connection with the Dynon problem.

What cables are running next to the ADAHRS network cable? Are there any portions where you have, say, high power lines (like to strobes) running alongside the cable to the ADAHRS? My Sonex is a basic aircraft - no strobes. The only other electrical system that runs in the same conduit as the ADAHRS, is the headset jacks wires.

What has Dynon said about the diagnostic file you sent them previously? Dynon did not find any anomalies in the diagnostic files I sent them. I have downloaded two more diagnostic files & offered to send them - they have not asked me to do so.

 

[swatson999]

You have no recollection of posting this?

I can only respond to my local Dynon agent. The request for a test on the ADAHRS pins 2 & 7 is from them

Aside from that, I doubt there is any help anyone here can give you now. You've burned through 4 ADAHRS units, and seem convinced the problem is the ADAHRS units and not somewhere else. You need to find someone experienced with avionics, and specifically Dynon, to go through your system and examine all the wiring, connections and electronics to find the problem, because clearly just continuing to put in new ADAHRS isn't going to fix it for you.

Good luck.

 

[swatson999]

Time for a reset -
Are you still using the home made Pitot/AOA ?
IMO, & I’ve done many installs, the issue is with your installation regardless of any troubleshooting you’ve had done.
Have someone else sort it out properly AFTER a genuine Dynon heated/unheated Pitot is installed.
PM me with your contact details or email/text me (I’m OS at the moment) there are guys in Oz who can give those.

I'm curious how you think that this could affect the ADAHRS to the point of failure, especially if it's on the ground when it fails (everyone's ADAHRS takes pitot/static/AOA inputs that are identical during ground start-up, and nobody else's seems to fail like this guy's...but I'm interested in your theory).

 

[SkippyDiesel]

Time for a reset -
Are you still using the home made Pitot/AOA ? YES
IMO, & I’ve done many installs, the issue is with your installation regardless of any troubleshooting you’ve had done. Agreed. I can not see where. I have bypassed the Dynon factory connection/cable SV-_ADAHRS ,with the test cable supplied, only to get the same result.

You may have noted that my Earth X 900 battery went dead during my latest attempts to get the system up & running. The battery is being recharged - weather permitting I will find out tomorrow if it has negatively impacted on getting the system to work properly.

Have someone else sort it out properly AFTER a genuine Dynon heated/unheated Pitot is installed. How will a Dynon pitot change the simple physics of pneumatics?
PM me with your contact details or email/text me (I’m OS at the moment) there are guys in Oz who can give those.

 

[SkippyDiesel]

You have no recollection of posting this? Now that you place your question in that context, the answer is yes I do have a vague recollection - wasn't this a continuity test ?

Aside from that, I doubt there is any help anyone here can give you now. You've burned through 4 ADAHRS units, and seem convinced the problem is the ADAHRS units and not somewhere else. Correction - its Dynon who keep sending ADAHRS modules. This has been their response to my report of a problem. You need to find someone experienced with avionics, and specifically Dynon, to go through your system and examine all the wiring, connections and electronics to find the problem, because clearly just continuing to put in new ADAHRS isn't going to fix it for you. Agreed!

Dynon have been very quick to respond to this problem. They have supplied about 4 replacement ADAHRS modules - not counting a loaner ADAHRS module, a loner SV unit, test lead to bypass installed (factory) cable and much phone/email time, with instructions on what to test/do.
Guessing at what has confounded the experts - System works perfectly for extended periods (flight time) before failure (always on ground before first engine start).
I have nor recollection of Dynon advising the condition of the ADAHRS modules returned - could there be a clue here?

Good luck. Thanks

 

[swatson999]

I have no recollection of Dynon advising the condition of the ADAHRS modules returned - could there be a clue here?

Yeah. You're probably fucking them up every time you plug one into your system and cause the failure. Either that, or they're perfectly fine and it's got nothing to do with the ADAHRS, so when they get them back, there's nothing wrong with them.

 

[swatson999]

Why do I feel like we're being trolled here?

 

[jakej]

Why do I feel like we're being trolled here?

Absolutely agree here.
I sent him a PM & he’s posted that here - that’s totally unacceptable IMO & the reason I’m disregarding any more input from Skippy Diesel.
My reason to send him a PM was to discuss some thoughts I have & possibly to help out ‘no charge’ to solve his ‘issues’ & I have an idea where his problems are.
That is not going to happen now & only has himself to blame.
This whole episode has wasted a few posters time & efforts to help, as we voluntarily do.

 

[SkippyDiesel]

Absolutely agree here.
I sent him a PM & he’s posted that here - that’s totally unacceptable IMO & the reason I’m disregarding any more input from Skippy Diesel.
My reason to send him a PM was to discuss some thoughts I have & possibly to help out ‘no charge’ to solve his ‘issues’ & I have an idea where his problems are.
That is not going to happen now & only has himself to blame.
This whole episode has wasted a few posters time & efforts to help, as we voluntarily do.

No offence but you guys are paranoid or something -

If anybody's "trolling" it you two.
Swatson999 -

You talk big & offensively - deliver nothing - get a life!

Jakej;

I have NOT posted your PM to me - where do you see it?

So far you have discussed nothing - I would never pay/ charge for internet/Forum advice - goes against all the tenants of a voluntary forum like this.

I only got your PM this morning & have been flat out with home tasks since - I did not realise you wanted an immediate reply, to somewhere in the Arctic/Greenland "allow 1 to 2 days for my reply as internet is poor here."

I will post it if, thats what you want - hardly constitutes privileged/personal information.

I suspect you have no idea what the problem is or its remedy - you are just a "poser" like Swatson999, who enjoys being nasty on the net - TROLLING??

 

[swatson999]

Yeah, well, that's just like, your opinion, man.

I think people here have been more than patient with you. You don't seem to be taking anyone's advice, just keep swapping ADAHRS boxes and hoping some magic happens that tells you what the problem is, instead of, you know, learning about electronics and wiring and doing the job yourself (or paying someone who knows what they're doing to find it).

As for your snarky comment? I'll tell you what I delivered (other than that thing you see on the left of my posts, and a few more like it besides)...an RV with a working SV system with an ADAHRS that hasn't failed one time in 1000 hours of flight.

But hey, you do you, pal.

 

[SkippyDiesel]

Yeah, well, that's just like, your opinion, man. Who else's opinion might it be? What makes you think I am a man? You assume too much and ascribe characteristics, without any evidence to do so. FYI: This sort of baseless characterisation of other people, is the foundation of Eugenics.

I think people here have been more than patient with you. So, now you speak for all others on the Forum. Your ego is quite extraordinary - another undesirable characteristic, probably goes hand in hand with the above.. You don't seem to be taking anyone's advice, Not true - I acted immediately on your advise regarding the Diagnostic Down Load - Dynon did not expect/ want it at that time - pretty much wasted effort. If I didnt thank you at the time, consider yourself thanked. just keep swapping ADAHRS boxes and hoping some magic happens that tells you what the problem is, instead of, you know, learning about electronics and wiring and doing the job yourself (or paying someone who knows what they're doing to find it). You clearly have not understood what I have writen - Dynon instigated every replacement of the ADAHRS modules - direct your venom at them.

As for your snarky comment? I'll tell you what I delivered (other than that thing you see on the left of my posts, and a few more like it besides)...an RV with a working SV system with an ADAHRS that hasn't failed one time in 1000 hours of flight. Bully for you, sometimes people are just lucky or is this just another demonstration of unfounded arrogance?

But hey, you do you, pal.

I cant make up my mind -

• Do you actually want to help people simply for the altruistic satisfaction and unfortunately don't really have the knowledge to follow through, covering your ignorance by being unpleasant?

OR

• One of those nasty people, who hang out a bait of minimal information, just so that you can drip feed a little more at a time, belittling the recipient at the same time, somehow deriving perverse pleasure out of the grandstanding process.

 

[swatson999]

Instead of writing diatribes on this forum, might I suggest that you get to work on your airplane and find the source of the fault instead?

You're not listening to the collective wisdom here which has told you, several times, that the fault is virtually certain to be somewhere other than the ADAHRS box, and yet you continue to argue and swap out more ADAHRS units. Read our lips: NOBODY is unfortunate enough to get 4 bad ADAHRS units in a row.

The source of the problem lies elsewhere. Most likely within the SV, or perhaps within the network bus card if you have one installed (but without a schematic, WE can't tell you any more than that).

Oh, and BTW...luck's got nothing to do with it.