Yak-List Digest Archive

Sat 09/25/10


Total Messages Posted: 3



Today's Message Index:
----------------------
 
     1. 12:47 AM - Re: Getting caught off guard, a life and death issue (Didier BLOUZARD)
     2. 07:13 AM - Re: Getting caught off guard, a life and death issue (barryhancock)
     3. 01:53 PM - Re: Re: Getting caught off guard, a life and death issue (Didier Blouzard)
 
 
 


Message 1


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    Time: 12:47:36 AM PST US
    From: Didier BLOUZARD <didier.blouzard@gmail.com>
    Subject: Re: Getting caught off guard, a life and death issue
    Very very impressive Particularly when reading your experience of risk management. This brings me to enhance two points: 1) amazingly, whatever experience we have in aeronautic the risks are the same 2) when there is anything unusual we have to raise the attention and search for the reason Nothing is irrelevant. Thanks a lot for sharing Didier Blouzard +33 6 2424 3672 Le 25 sept. 2010 01:20, CHRIS ABBOTT <cabbott@dragnet.com.au> a crit : > Guys. > > Cant help but to comment, whilst best practices are always good, all accidents are a sequence of events that until lined up may never happen! > > My story goes this way, I have a yak 52 built 1990 VH-YAV, am an avid pilot (390hrs and 98 in type), Drag racer (2007 championship winner HD Destroyer 9.38sec 147mph ) Flat track racer (HD XR 750, good mates and raced with Jay Springsteen), a Scuba instructor (wreck, deep 60m+ with over 2000 dives logged) and in excess of 20 years of experience monitoring and teaching safety around construction and heavy equipment, ridden motorcycles 1.1 million kilometers including one trip around the world, to base camp tibetan side, seen war in lebanon "85", Sahara desert, look if it had horsepower, speed and calculated danger i was into it. Farm raised, a mechanic and tekkie for some 32 years I am very fastidious about maintenance, build all my race engines and do all my setups so my yak starts extremely easily! > > My sequence of events go this way : - Some 18 months prior to getting in the way of the prop i had treatment for cancer and subsequent chemo, with this a couple of business worries and a foggy head! during the whole 18 month period of treatment and recovery i had to attend to business (partner rip off problems), this left me with a "busy mind". > At midday on April 4th 2008, even though the night before we had a late one (tired but not hung over) i dragged the yak out to take a client for a "deal clincher", done my normal pre flight and noticed that both the battery and air was a little low during this i received an argumentative phone call from a previous supplier of the business, after i sat for a while to try to calm down, a short time had elapsed and i felt ready to go ahead, primed the engine, jumped in the cockpit to fire it up and taxi to the fuel bowser, whilst even though it started easily with the low air and battery it stopped quickly ! this then lead to the sequence that would end in tears, i was concerned that if i just primed and tried starting on the air it would not have enough to pull the fuel through so i jumped out to pull through by hand and to conserve air, looked back to do a check "mags off etc" and reverted to my instinct of turning things anti clock ways for "off" and subsequently turned the mags on, the little voice told me this was incorrect but i assured myself it wasn't (no glasses didn't check the numbers), slid over the front of the wing to make it quicker (didn't touch the prop!) checked the oil drain to make sure that it was closed (once again didn't touch the prop) looked at the prop, it was at approximately the 1:35 position, made the decision to pull it down to a position where i could get to it easily, i stepped in and reached under the blade rather than lift the lower blade (quicker this was the final sequence that would see me in and out of surgery for the next couple of years), as as soon as i touched it it immediately fired backwards for about 3 blades (fortunately as this pushed me back) then jumped into a very nice fast forward idle striking my arms and legs as i tried getting out of the way. > The sequence of events that lined up were as follows > > Tired. > Busy Brain. > Distracted by phone call. > Low air (start solenoid was partially activated). > Low battery (shower of sparks remained active). > In a hurry and happy to accept the low air and battery. > Compromised standing position and sequence for pulling through. > > The engrained safety in me saved a much worse incident as i had applied the brake, turned on the air and never once placed my head or the core of my body in a position of rotating danger. > > Hope this helps to keep the sequences out of sync and a sense of what can happen when distracted (couple of photos attached to remind) > > <IMG_0208.jpg> > <IMG_0205.jpg> > <P4280039.jpg> > > > Thankyou > > Chris Abbott > > > On 24/09/2010, at 4:38 PM, Didier Blouzard wrote: > > Indeed, > > it is easy to make a mistake......yes and no!!! > In the world of safety, there are always multiples factors leading you to a risk. > So if there is one point of procedure not usual, question yourself and find the reason before going further. > But mainly youcan get away of a lot of risk by following procedures. > Because following procedures let your mind plenty of time to take in account the unpredictable events. > > We have the luck to have a few people on this list giving us good procedures so read them, make them yours and apply them systematicaly. > > For hand starting .... I have never read any procedure.... just a few : "pull and stay away of the blade" . > > I've heard some of the good eastern mechanic say that they start with a rope (a buckle over one blade) in order to avoid being in front or close to the prop. > > So apply procedures and be safe....well...safer!!! > > > Didier > > > 2010/9/23 <sajdds@comcast.net> > Given how easy it is to make a mistake or to have the mag cutoff fail what is the correct way to hold and to swing a prop? I would also be interested in knowing the safest way to hand start the M14P. > > Steve Johnson > Yak-52 N9900X > 0B5 > 413 522-1130 Cell > > ----- Original Message ----- > From: "barryhancock" <bhancock@worldwidewarbirds.com> > To: yak-list@matronics.com > Sent: Wednesday, September 22, 2010 3:00:51 PM > Subject: Yak-List: Getting caught off guard, a life and death issue > > > Gang, > > I had an experience recently that I would like to share with you. First, I want to give you some background, both because many of you don't know me, and I think it's relevant to the issue at hand. > > I have had the good fortune to fly Yaks and CJs for over 10 years now. I have ~2000 hrs. of PIC time, mostly in warbirds. For the past several years I have been current in the following aircraft: CJ-6, Yak-50, L-39, and Lancair Legacy. For the past 3 years my CJ and Yak flying time has been more limited due to work and my constant commuting back and forth from Utah to Chino in the Lancair, but I've still managed about 300 hrs./year all combined. In the past few months we have had 3 different ground up restoration CJs get completed and delivered. Part of that process is test flying the freshly restored airplanes, which definitely gets your attention as a pilot. Included in this has been a lot of adjustments with the engine, which necessitates a lot of starting, stopping, tweaking, starting, etc. A lot of in and out of the cockpit. Well, one day, I got lazy..... > > On a CJ that I had literally started over a dozen times over the period of several days between test flights, prop governor adjustments, electronic engine monitoring tweaks, etc., I was all set for another test flight. Preflight complete, pulled through, primed and ready, I hit the start button. The engine had been starting flawlessly, so when it didn't start after a few blades I stopped and reprimed. A few more blades and nothing. A few more start attempts...nothing. I decided to get out and start over. So I unstrapped, got out and started to pull the prop through....on the second blade the engine coughed and then roared to life. When it coughed I knew what was coming and jumped out of the way. My guess is the engine was turning about 1400 RPM....no chocks, no brake strap...and it started rolling. In the blink of an eye I spun out of the way and reacted. I knew what was at stake...get the plane stopped quickly or this brand new restoration as going to tear into a h! > angar down the row. > > As the plane was rolling towards me, I got clear of the prop arc and tried to jump up on the front of the wing. My timing was a little off and the wing hit me right in the side of the hip (the bruise still shows 2 months later). Luckily, I landed on my feet. I knew at this point with the plane accelerating that I had one last chance. Simultaneously back peddling and planting to jump up, I grabbed ahold of the canopy rail, pulled myself up, reached in and grabbed the brake handle with my right hand and killed the mags with my left. Where the plane stopped there had been a Piper Cherokee sticking out of it's hangar about 30 minutes before. Another 20 feet further and the wingtip would have grabbed a hangar door and spun the airplane into that hangar with the prop at something above idle. It would have been ugly. > > What would have been uglier is my body splattered all over that ramp. I reacted to the situation and luckily things came out OK. I can't count on that luck if it were to happen again. And neither can you..... > > So, here are the main things I've learned from this and hopefully you can learn by reading, and not from your own similar event. > > 1) Familiarity breeds complacency. I had done this so many times recently (and always with the airplane chocked when we were tweaking) I neglected to follow the golden rules: Mags OFF, Throttle IDLE, Parking Brake Set. Any of these three make for a much less exciting event. It only takes one time getting complacent to have a really bad day. > > 2) Just because you are current, doesn't mean you are proficient. While I had about 10 hours of CJ flying in the last couple of months prior to this, I fly a variety of stuff so my habits for the CJ isn't what it used to be when I flew them almost exclusively. When things got out of the routine, I needed to stop and double check everything. > > 3) No matter what, follow the golden rules for pulling through the prop. 1) Mags off, 2) throttle idle, and 3) parking brake (in the case of the CJ, a velcro strap) in place. > > I got lucky. I could have turned into prop-sui. I could have gotten someone else hurt. The plane could have been destroyed. Lots of other bad things were possible. Honestly, it was my athleticism that saved me...not something I'd like to count on again, and something that left guys like Pappy a few years ago. ;)- The other thing that saved me was proper technique on pulling the prop through. One thing I have in my head is to treat that prop like a loaded gun. I see guys that get their body in the prop arc when pulling blades through and it makes me cringe. Had I done that, I likely would not be writing this. > > Things go well for so long we sometimes forget how narrow the line is between fun and death in this business. I remember now...and hopefully you do to. > > Happy Flying! > > Barry > > -------- > Barry Hancock > Worldwide Warbirds, Inc. > (909) 606-4444 > www.worldwidewarbirds.com > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=313411#313411_p; &n=================== > > > > > > et="_blank">http://www.matronics.com/Navigator?Yak-List > tp://forums.matronics.com > _blank">http://www.matronics.com/contribution > > > > > -- > Didier BLOUZARD > didier.blouzard@gmail.com > 0624243672 > > > >


    Message 2


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    Time: 07:13:42 AM PST US
    Subject: Re: Getting caught off guard, a life and death issue
    From: "barryhancock" <bhancock@worldwidewarbirds.com>
    Didier, That was my main point....the prop doesn't know/care whether you have 200 hours or 20,000 hours. Nor does the ground or anything else. Hopefully we've all be flying a lot this summer, and hopefully we take the time to step back and make sure we are not getting complacent! Barry -------- Barry Hancock Worldwide Warbirds, Inc. (909) 606-4444 www.worldwidewarbirds.com Read this topic online here: http://forums.matronics.com/viewtopic.php?p=313696#313696


    Message 3


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    Time: 01:53:34 PM PST US
    From: Didier Blouzard <didier.blouzard@gmail.com>
    Subject: Re: Getting caught off guard, a life and death issue
    Thanks BArry, At least all these stories of getting caught by the prop will have an effect on my procedures for turning the prop. Yesterday I was turning the blade without thinking to a potential starting, without brakes and without chokes. Now I will beware of the prop and turn it like a loaded gun, put the chokes and if I can't put the chokes, at least systematicaly put the air and parking brakes (on my 18T) before turning the prop. This will be my new procedure Thanks a lot for that. Kind regards Didier 2010/9/25 barryhancock <bhancock@worldwidewarbirds.com> > bhancock@worldwidewarbirds.com> > > Didier, > > That was my main point....the prop doesn't know/care whether you have 200 > hours or 20,000 hours. Nor does the ground or anything else. Hopefully > we've all be flying a lot this summer, and hopefully we take the time to > step back and make sure we are not getting complacent! > > Barry > > -------- > Barry Hancock > Worldwide Warbirds, Inc. > (909) 606-4444 > www.worldwidewarbirds.com > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=313696#313696 > > -- Didier BLOUZARD didier.blouzard@gmail.com 0624243672




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