[NSRCA-discussion] Matt Finley ( Arming Plug )

[Derek Koopowitz]

I think the failsafe demonstration should occur when the airplanes are
processed - weighed and measured?

On Mon, Feb 23, 2015 at 9:38 AM, Ronald Van Putte via NSRCA-discussion <
nsrca-discussion at lists.nsrca.org> wrote:

> I use an arming system on my competition airplanes.  That doesn’t make my
> system foolproof, but I fail to see that it introduces safety issues.
> Maybe the wiring could fail and the motor not start when commanded, but any
> reasonable wiring failure I can think of would not result in the motor
> running.
>
> Of greater concern to me is that many pilots either have not or have
> improperly set up the failsafe for when the transmitter is turned off.   I
> witnessed an accident that resulted in the destruction of one airplane and
> severe damage of another when the pilot turned off his transmitter.
> Fortunately, nobody was hurt.
>
> I am tempted to ask the Nats event director (Bob Kane) to have the line
> chiefs request that pilots demonstrate their airplane’s failsafe operation
> prior to their first official flight at the Nats.
>
> Ron Van Putte
>
> On Feb 23, 2015, at 11:05 AM, DaveL322 via NSRCA-discussion <
> nsrca-discussion at lists.nsrca.org> wrote:
>
> How many runaways have happened with electrics at pattern contests?  Since
> maybe 2008 when substantial numbers of electrics were being used?
> Personally,  I have never seen one.
>
> How many IC engines have I seen inadvertently started at half or full
> throttle since 2008?  I have personally seen several.
>
> Have there been instances of of arming plugs and wiring fail?  Yes.
>
> A lot of things could go wrong resulting in a potential safety hazard with
> IC or electric patterns planes.  Having a safe procedure and sticking to it
> 100% is the issue.....accidents happens when procedures are not followed.
> Arming plugs themselves do not make electrics safe....they do introduce
> another failure point.
>
>
> Regards,
> Dave
>
> Sent on a Sprint Samsung Galaxy Note® 3
>
>
> -------- Original message --------
> From: Budd Engineering via NSRCA-discussion <
> nsrca-discussion at lists.nsrca.org>
> Date:02/23/2015 11:50 AM (GMT-05:00)
> To: Matthew Finley <rcfin02 at msn.com>, General pattern discussion <
> nsrca-discussion at lists.nsrca.org>
> Cc:
> Subject: Re: [NSRCA-discussion] Matt Finley ( Arming Plug )
>
> At nearly every contest I've attended since I started flying electric in
> pattern (the 2004 Nats in Masters) I've seen at least one occurrence where
> someone retrieved a plane without removing an arming plug first.  Usually
> the pilot reminds the person to do it while they're carrying the plane back
> or as they're setting it down somewhere.  It happens with my planes too and
> I make sure they switch the receiver off and then I remove my canopy and
> disconnect the battery directly.  But before they even get that far I've
> taken the other steps to make sure there's virtually no chance the motor is
> going to run.
>
> My point is this.  A layered approach is the only way I've found to
> effectively mitigate this particular risk to the levels of safety that you
> claim.  Relying on someone to remove an arming plug is not a complete
> panacea and may lend a false sense of security that the motor system has
> been de-energized, when in fact it may not have been.  There's many ways to
> manage the risk to the desired level, the use of an arming plug is one, and
> may not necessarily be the best.
>
> Jerry
>
> Sent from my iPhone
>
> On Feb 23, 2015, at 5:29 AM, Matthew Finley via NSRCA-discussion <
> nsrca-discussion at lists.nsrca.org> wrote:
>
>
> *I use the Ultra Deans stlye Arming Plug from F3A Unlimited, and It works
> very well. I would gather it provides you with a 99 % dagree of confidence
> that your caller , plane carrier , yourself, or anyone else will not be
> harmed. Yes... I do agree that there is a miniscuel chance that a pilot /
> caller could forget to unplug the safety, however I feel most pilots that
> have been doing it a while is like tying your shoes, or etc.... On all of
> my electrics except for indoor ships, I have some sort of disconnect. I for
> one would like to see it an inforced rule at all sanctioned meets not just
> pattern meets, that any plane over a certain size or weight must have one
> in order to fly. Just my three pennies *
>
> *Matthew E. Finley*
> QCI - Technology Assistant
> 614-557-3846 Mobile
> mfinley at quadcityinnovations.com
>
>
>
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