AV8ORJWC
Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"
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 Posted: Sat Apr 12, 2008 7:57 am Post subject: RV-List: RV safety RV_Stats-1.pdf - |
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This post is read by a number of readers on this list as well, but for those who do not follow it there, the value is clear in reviewing the attached Ron Wanttaja PDF.
Dumb Pilot Errors are the leading cause of RV accidents (significantly). Maintenance is seldom the cause because there are so many experts out there on such popular kits. Builder Errors for RVs are greater than Homebuilts in general and may be a result of many assuming that techniques used by others and factory plans are without fault and the builders blindly move ahead with the moving herd. Try being the first for the Acme 1000 and every step is carefully considered and reviewed. Fuel Exhaustion in RVs is inexcusably high and is significantly higher than other homebuilts. (Tell me Why?)
Now, here is where you should each be focusing. These statistics are not yet updated for calendar 2005 and 2006 (the RV-10 began gaining flight hours in 2005). Ron concluded that lower accident rates for RVs is a result of generally higher hours of aeronautical experience and more advanced ratings of RV pilots. If you have ever looked over the field of RVers at EAA functions you could conclude they tend to be much older and therefore less bold. Conclusion, the RV-10 is significantly more complex and challenging than our little brother RV-6, RV-7 or RV8. A statistically large number of RV-10 builders had/have no pilots license (during the build) or significantly lower experience than Ron's premise. Many of the builders are younger than his statistics imply. A high percentage have minimally low IFR time (Tim is an exception here).
This is an opportunity in the making for rather dramatic Recurrent and Advanced Training for Pilots from the RV-10 fleet. We have the ability to skew the accident statistics either direction we choose. The choice is truly ours.
Do you want to play or move with the herd? The insurance underwriters will move these policy costs to remain profitable businessmen. Three (possibly four) aircraft total losses and four POBs in the last five months. 2008 is going to be a busy year.
John C - circa 2008
From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Jerry Springer
Sent: Saturday, April 12, 2008 1:05 AM
To: rv-list(at)matronics.com
Subject: RV-List: RV safety RV_Stats-1.pdf -
Hi all,
I am sure that a lot of you have heard of or read some of Ron Wanttaja,'s articles
He writes article and gives talks at EAA functions about safety etc.and does statistical studies
mostly pertaining to homebuilt aircraft. I have known
him for a few years and I wrote to him and ask if he could help with the statistic regarding
RV accidents compared to the rest of the homebuilt community
and this is what he sent me.
Jerry Springer
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | Quote: | On Fri, 11 Apr 2008 21:24:42 -0700, you wrote: | Quote: | | > Can can I post this on the RV-List?> There is a discussion going on there about how to make the RV flying> community safer and how to compare RV accidents to the rest of the > homebuilt accident rates. Someone ask how to break the RVs apart from > the rest of the homebuilt accident statistics. I would like to point people> to your article or maybe you could help us out some way with RV accident> statistics. |
I give talks to the local EAA chapters that go further than the articles.Attached is a page from my presentation where I discuss RV accident causes andcompare them to the overall statistics. The data is based on accidents from1998 through 2004, inclusive. "General Pilot Error" is basically mistakes in the stick-and-rudder skills;"SALA" stands for "Stupidity at Low Altitude," buzzing, flying up box canyons,etc. In my presentations, I use a red star to call attention to interestingresults, such as the RV's higher rate in what I call 'cross-country' accidents. The lower rate of pilot error accidents may well be due to the higher generalexperience level of RV pilots, as shown by the median pilot hours. During the subject period the annual fleet accident rate for all homebuilts wasabout 0.94% (e.g., almost one out of every 100 homebuilts crashes in a givenyear) and the RV fleet accident rate was almost identical (0.90%). In contrast,the Glasair rate was 1.11%, The overall rate for all N-numbered aircraft was0.63%, so homebuilts have a rate about 50% higher than the overall fleet. I'm currently adding 2005 and 2006 data to my database, and will be updating thegraphs accordingly. Don't expect them to change too much, but you neverknow.... Ron |
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