On 15/10/2012, at 13:12, Tim Shirley <tshir...@internode.on.net> wrote:

> As a general comment, making mandatory rules for obstacle clearance for 
> aircraft without a throttle lever seems a bit silly. 

Agreed! Nevertheless, my received training and my experiences at various 
gliding operations have lead me to believe that that's what someone actually 
did, and I'm trying to get to the bottom of it.

For instance, at a comp where I listened to a CD giving a briefing to the 
assembled multitudes in the day before the competition finish OD, saying, "I'm 
a very poor judge of 50 feet, but I'm an excellent judge of safety." That CD 
clearly believed there was a 50' rule too, otherwise he'd not have worded his 
comment the way he did.

So I *think* it's true that there's a widespread believe within GFA that 
there's a rule which mandates a 50' obstacle clearance minimum, and I'm trying 
to find out why :)

   - mark


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