Harry is in Nrm at the moment. Whilst he is able to receive emails he is not
able to send. He has asked me to send the following message:

Hi All,.

I have not been particularly interested in the online debate about the
merits or otherwise of Flarms. What has prompted this reply was yet another
extremely close near miss at Narromine a couple of days ago in which a pilot
on early final was suddenly confronted by a glider crossing his path and an
accident was only avoided by him taking instant and violent avoiding action.
It would be easy to say they 
should have seen each other, but how regularly do you scan to the side when 
on final? Also two tugs came within a metre or two of hitting each other 
just prior to the NSW State comps and again evasive action was used. A
second near miss involving tugs happened more recently. Statistically, if
you have near misses then sooner or later a mid air with the strong
possibility of a tragedy is inevitable 


Please consider:-

There are now over 5,000 Flarms installed in European gliders, including 
those flying over flatlands. Many clubs have made them mandatory. Surely 
about as great a vote of confidence as one could wish for.

No matter how good your lookout, no more than half of the airspace 
surrounding a glider can be seen. A threat can come from any direction.
Flarm 
continuously scans the 360 deg. of airspace around you for several 
kilometres, and above and below you. Provided ALL gliders and tugs are 
fitted with Flarms, this must be an added safety factor

Australia's best pilots have told me that their lookout virtually becomes
non 
existent under certain circumstances, particularly when trying to centre or 
work hard lift or very low.

Pilots who have used Flarms regularly say they do not become complacent 
about look out, on the contrary they say it sometimes gives them a wakeup 
call to smarten up their lookout.

It is a physical impossibility to continue a regular, continuous scan on a
long flight 
and even if you did the major threat is usually in front of you and looking 
away from your direction of travel while conducting a scan, carefully 
searching the surrounding airspace as suggested by various authorities, 
means you are not looking where you are going for quite a while.

The "radar" display which shows your glider in the center and the exact 
position and relative altitude of nearby gliders is a considerable 
enhancement. Nigel Andrews is developing a comparatively low cost Flarm add 
on to fit a 57mm hole or sit on top of the panel which as well as giving
basic navigational information, displays the "radar" screen whenever a flarm

equipped aircraft comes into range. I find it a great improvement on the 
standard flarm display. It is very useful knowing the distance separating 
you from another glider, also their precise track in relation to your 
glider. How can anyone argue against having this knowledge, which requires 
all nearby aircraft to be fitted with the equipment? When S type 
transponders become widespread in Australia, Nigel has plans for an add on 
receiver which will pick up S type transmissions and show the position of 
equipped aircraft on the Flarm display.

My own accident as well as others I have studied, shows that Flarm would 
have almost certainly saved accidents. In my case, the data logger traces 
show I was being followed by another glider a few hundred meters behind, 
slightly to my left and a little higher. No scan before a turn could have 
seen him. Would I have started a thermalling turn to the left if Flarm had 
alerted me to the other gliders presence? Never! Shortly before the 
collision I saw the other glider on my extreme right in what appeared to be 
a collision course, so my lookout wasn't all that bad , but I could not 
avoid him and the other glider hit my wing from behind.The other pilots 
statement said he did not see me until the instant of the accident. He also 
said he had been looking at another glider ahead and above. Very common for 
a pilot to be studying the situation ahead, perhaps other gliders or
deciding on the most favourable clouds. We all do it. I am not trying to be
critical of the other pilot. Without doubt both Flarms would have given
continuous position advice additionally to sounding alarms before the point
of contact and almost certainly prevented the accident which nearly cost my
life and a new glider uninsured except for 3rd party insurance. I wasn't
worried about the money but put a substantially higher value on my life and
that of others who Flarm might have saved or will save in the future.

We all know Flarm has its limitations. Gliders thermalling together in close

proximity can make unexpected changes of direction which would make an 
accident certain but this is not the scenario of many accidents. 

The sooner all gliders and tugs have flarms fitted,the safer we will all be,

 

Harry Medlicott 

 

 

 


Keith Dixon & Anne Elliott
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