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  #1  
Old 08-30-2022, 03:15 PM
rv8ch's Avatar
rv8ch rv8ch is offline
 
Join Date: Feb 2005
Location: LSGY
Posts: 5,004
Default RV-8 fuel starvation accident

I guess we can all learn something from this accident.

https://old.reddit.com/r/NTSB_databa...ph_w_vans_rv8/


https://data.ntsb.gov/carol-repgen/a...ort/103180/pdf

I hope the pilot has a full and speedy recovery.
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  #2  
Old 08-30-2022, 03:48 PM
Mikeyb Mikeyb is offline
 
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Still processing that one
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Last edited by Mikeyb : 08-30-2022 at 03:51 PM. Reason: Insensitive comment removed
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  #3  
Old 08-30-2022, 03:54 PM
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airguy airguy is offline
 
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The shop obviously did not test for full-power runup and match the fuel flow to what should be consumed - the difference there should have been way obvious during any attempt to calibrate the fuel flow.
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N16GN flying 1,200 hrs and counting on 91E10; IO360, SDS, WWRV200, Dynon HDX, IFD440, G5
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
Repeat Offender - 10 empennage in process.
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  #4  
Old 08-30-2022, 03:57 PM
scsmith scsmith is offline
 
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Some thoughts:

1. The report mentions that the fuel tank root ribs were pulled out of the wing skins. It would be nice to know if the forward attach brackets had the proper slots as depicted on the plans, or simply match-drilled holes? (An example of when it would be good for NTSB examiners to recruit assistance from someone familiar with the aircraft type).

2. Really sad that the fuel supply used a restrictor fitting intended to supply gauges. No mention if that installation was performed by the avionics shop that installed the G3 or if that installation was performed by the owner.

3. The report mentions that the 5-pt harness was intact, yet there were impact marks on the panel. The panel is fairly close to the pilot on the RV-8. But not close enough to allow impact with the panel unless the belts are REALLY loose.
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  #5  
Old 08-30-2022, 04:01 PM
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They used the restricted fitting which normally is for fuel pressure as the main output to the carb, major oops !
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  #6  
Old 08-30-2022, 04:06 PM
Canadian_JOY Canadian_JOY is offline
 
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Wow. Simply wow. I recently made a change to my fuel system and have had it independently inspected by two sets of knowledgeable eyes in addition to my own. Still, my spidey senses are tingling full strength at the thought of having potentially introduced the same kind of issue as noted in this accident report. Before installing the cowls I'm going to look at the plumbing again, thanks to this timely post.
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  #7  
Old 08-30-2022, 04:07 PM
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Quote:
Originally Posted by rv8ch View Post
I guess we can all learn something from this accident.
Nothing in the report tells us who plumbed it...

https://data.ntsb.gov/Docket/Documen...to%201-Rel.pdf

I once caught an engine driven pump plumbed backwards during a TC visit, but the fellow was a first time builder, and it wouldn't have run anyway.
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Last edited by DanH : 08-30-2022 at 04:09 PM.
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  #8  
Old 08-30-2022, 04:32 PM
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airguy airguy is offline
 
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Quote:
Originally Posted by DanH View Post
Nothing in the report tells us who plumbed it...

https://data.ntsb.gov/Docket/Documen...to%201-Rel.pdf

I once caught an engine driven pump plumbed backwards during a TC visit, but the fellow was a first time builder, and it wouldn't have run anyway.
To my knowledge, there is only one shop on the field there that will do panel installs on experimentals. I know the field quite well.

That still doesn't tell us if it was that particular shop that plumbed it, versus the aircraft owner.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2022 dues paid
N16GN flying 1,200 hrs and counting on 91E10; IO360, SDS, WWRV200, Dynon HDX, IFD440, G5
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
Repeat Offender - 10 empennage in process.

Last edited by airguy : 08-30-2022 at 04:34 PM.
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  #9  
Old 08-30-2022, 04:41 PM
vic syracuse vic syracuse is offline
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Wow. It's interesting to me that the line is capped off. You have to wonder if the fuel pressure gauge was not hooked up at all.
It helps to have a checklist after a panel installation and have another set of eyes look things over, especially when there are so many potential changes in the engine compartment.

Vic
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  #10  
Old 08-30-2022, 05:06 PM
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rv6ejguy rv6ejguy is offline
 
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Wouldn't a run up have discovered this on the ground?
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